Addition Worksheets
Build addition skills from the ground up with almost 80 free addition worksheets, covering everything from kindergarten picture problems to multi-digit sums. Start with understanding addition using visual models, move into traditional vertical and horizontal problems, and build fluency with timed addition drills. You will also find word problems, multiple addend practice, and strategy pages for skills like making tens and breaking apart numbers. Every worksheet is a printable PDF with an answer key, comes in multiple versions, and can be assigned digitally - no login or account required. Modified versions with fewer problems make it easy to support students who are still mastering a concept, and the built-in grading column and quick grade scale let you score a page in seconds. Ideal for kindergarten through 4th grade classrooms, intervention groups, and homeschool families.
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Understanding Addition
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About these worksheets
These worksheets introduce students to the foundational concepts of addition. Activities include matching pictures to addition sentences, identifying number pairs that make 10, breaking apart two-digit numbers into tens and ones, and counting up and down within 20. Designed primarily for kindergarten and first grade, these resources help young learners connect visual representations to number sentences and build early number sense before moving on to traditional addition problems.
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Match a picture of objects to the addition sentence that shows the same total. Count items in two groups and add them to find how many there are altogether. Use the plus sign and equals sign to understand that two different-looking equations can mean the same thing.
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Practice figuring out which addition expressions equal a given number Learn that more than one addition problem can have the same answer Check basic addition facts by deciding if each expression matches the target number
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Add numbers up to 10 to make a total. Identify two smaller numbers that can be used to make a larger number. Find a missing part when you know the whole and the other part Build understanding that a number can be split into different combinations that add up to the same total
Find the next number by adding 1 to a given number. Find the previous number by subtracting 1 from a given number. Use counting order to decide which number is 1 more or 1 less. Connect the words more, less, next, and previous to the correct math action.
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Find the missing number that pairs with another number to make 10. Build speed and confidence with addition facts that add up to 10. Notice patterns in complements to 10 (like 1 goes with 9, 2 goes with 8).
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Break a two-digit number into tens and ones (like 47 = 40 + 7).
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Practice counting up from a given number to find a larger number Practice counting down from a given number to find a smaller number Connect counting up and counting down to basic addition and subtraction
Traditional Addition
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About these worksheets
Practice standard addition problems ranging from simple sums within 5 all the way up to four-digit plus four-digit addition. Worksheets are available in both vertical and horizontal formats and cover key skills like regrouping (carrying), adding multiples of ten, finding missing addends, and solving mixed addition and subtraction problems. These resources align with Common Core standards from kindergarten through fourth grade, giving students structured practice at every level.
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Add two whole numbers where the sum is 5 or less (e.g., 2 + 3). Subtract within 5 to find how many are left (e.g., 5 − 2).
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Add two whole numbers with sums up to 20 (e.g., 8 + 7).
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Add two whole numbers with sums up to 20 (e.g., 8 + 7).
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Add two numbers up to 100 to find the total. Use carrying (regrouping) when the ones add up to 10 or more.
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Add two numbers up to 100 to find the total. Practice adding when you need to trade 10 ones for 1 ten (carrying). Practice adding two-digit numbers with and without carrying Solve addition problems where the sum stays within two digits (no answer over 100) Work with a mix of two-digit plus two-digit and two-digit plus one-digit problems
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Add a 2-digit number and a multiple of ten within 100 (e.g., 34 + 20). Use place value to add tens to a number while keeping the ones digit the same (e.g., 57 + 30 = 87). Solve vertical (stacked) addition problems without regrouping when adding tens.
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Add a 2-digit number and a multiple of ten within 100 (e.g., 34 + 20). Use place value to add tens to a number by changing only the tens digit (ones stay the same). Count on by tens from a 2-digit number to find the sum (skip-counting by 10s).
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Add two multiples of ten (e.g., 40 + 70) to find the sum. Use place value to add tens and write the total with a zero in the ones place.
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Practice finding a missing number in addition and subtraction equations Get comfortable seeing the unknown in different spots — at the beginning, middle, or end of an equation
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Practice subtracting two-digit numbers to find how many are left or how many more are needed. Decide whether to add or subtract based on the symbols in the problem. Work carefully with place value so the ones and tens stay in the right spots. Practice finding a missing number in addition and subtraction equations Get comfortable seeing the unknown in different spots — at the beginning, middle, or end of an equation
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Practice adding and subtracting numbers up to 1,000 accurately. Decide whether to add or subtract based on the symbols in the problem. Use regrouping when needed to solve multi-digit addition and subtraction. Keep digits lined up by place value so the answer makes sense. Practice finding a missing number in addition and subtraction equations Get comfortable seeing the unknown in different spots — at the beginning, middle, or end of an equation
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Add two numbers where the total is 20 or less.
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Add two numbers up to 1,000 to find the total. Use carrying (regrouping) when a place value adds to 10 or more. Add in vertical form using the standard step-by-step method.
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Add two 4-digit numbers written in a horizontal equation (e.g., 3,482 + 6,159). Regroup (carry) from ones to tens, tens to hundreds, and hundreds to thousands when adding 4-digit numbers. Use place value to add thousands, hundreds, tens, and ones accurately.
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Add carefully across multiple columns to find the correct total.
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Add two numbers written in a row and find the total. Practice regrouping (carrying) when a place value adds up to 10 or more. Read and solve addition equations using the plus sign and equals sign.
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Practice adding numbers to find a total. Practice subtracting numbers to find how many are left or the difference.
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Find the missing number that makes an addition sentence true. Use the total (sum) to figure out what addend is missing. Practice quick addition facts with sums less than 10.
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Find the missing number that makes an addition sentence equal a target number. Read and solve horizontal addition equations with a blank or missing addend. Check your answer by adding the two numbers to see if they match the target.
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Practice adding multi-digit numbers using carrying when a place value adds to 10 or more. Practice subtracting multi-digit numbers using borrowing when you don’t have enough in a place value.
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Add two four-digit numbers to find the total. Use carrying (regrouping) when a place value adds to 10 or more.
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Follow directions that require two steps in a row Carry the result of the first step into the second step Tell 'subtract 400 from it' apart from 'subtract it from 400' Add and subtract whole numbers up to 100,000
About these worksheets
Word problems help students apply addition skills to real-life situations. These worksheets present short story problems where students identify the important numbers, choose the right operation, and write a number sentence to find the answer. Problem sets are available at three difficulty levels — within 10, within 20, and within 100 — making them suitable for kindergarten through second grade.
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Solve simple story problems by figuring out what two groups are being put together. Add two numbers within 10 to find the total. Use words like total, sum, and altogether to understand what the question is asking.
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Solve simple story problems by figuring out what two amounts need to be added. Pick out the important numbers and words in a word problem and ignore extra details.
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Read a short story problem and figure out what numbers need to be added. Add two numbers up to 100 to find the total. Use clue words like "in all" and "altogether" to know it’s an addition problem.
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Judge whether an answer someone else gave is reasonable Use estimation to check an answer without working it out exactly Recognize that one part can never be larger than the whole Decide when an answer is too far off to be believable
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Decide which operations are needed to solve a two-step word problem. Add and subtract multi-digit numbers accurately with regrouping. Find a missing part when the total and other parts are known. Check that an answer is reasonable using the context of the problem.
Finding Sum with Rounding
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About these worksheets
These worksheets combine rounding and addition by asking students to round numbers to the nearest ten or hundred before adding. This builds mental math and estimation skills that students use throughout elementary math and beyond. Students practice deciding which place value to round to and then finding an estimated sum.
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Practice rounding numbers to the nearest ten or hundred. Decide which place value to round to based on what the problem asks. Add the rounded numbers to find an estimated total. Read word problems and pick out the numbers that need to be added.
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Round each number to the given place value before adding or subtracting. Estimate sums and differences to the nearest ten, hundred, thousand, or ten thousand. Recognize when an estimate is useful instead of an exact answer.
About these worksheets
When students are ready to add more than two numbers at once, these worksheets provide the practice they need. Activities range from adding three single-digit numbers with sums under 20 to adding three and four two-digit numbers with regrouping. Word problem versions are also included, where students pull key numbers from a story and add multiple three-digit addends. These worksheets align with first through third grade Common Core standards.
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Add three small numbers to find one total. Keep track of the running total as you add one addend at a time. Use number facts you know (like making 10) to add faster.
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Add three whole numbers (three addends) where each addend is less than 20 Find the total sum of three addends with answers within 20
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Practice adding three numbers together to find a total Solve word problems by picking out the important numbers from a story Figure out when a problem is asking you to combine groups to find "how many in all"
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Learn that you can group addends in different ways and still get the same sum. Fill in a missing number to make an addition equation true. Use number facts to break apart and combine numbers more easily.
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Add three two-digit numbers to find the total. Line up tens and ones so the addition stays organized and accurate. Use regrouping when the ones or tens add up to 10 or more.
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Add four two-digit numbers to find the total. Line up tens and ones correctly before adding. Use regrouping when the ones or tens add up to 10 or more.
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Practice adding three numbers together to find a total Solve word problems by picking out the important numbers from a story Figure out when a problem is asking you to combine groups to find "how many in all"
About these worksheets
Beyond memorizing facts, students need strategies to add efficiently. These worksheets cover key techniques including making a ten, using open and closed number lines, finding equivalent addition problems, identifying missing digits, estimating sums with rounding, and breaking numbers apart by place value. These strategy-based activities help students build flexible thinking and mental math skills that support fluency with larger numbers.
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Add within 20 by thinking of 10 and some more.
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Practice the "make a ten" strategy by rewriting an addition problem as 10 plus a leftover number Learn that you can break apart numbers to make a group of ten, which makes adding easier Find what's left over after making ten from two single-digit numbers
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Find the missing digit that makes an addition or subtraction equation true. Use place value to figure out what number belongs in a blank. Practice adding and subtracting using vertical (stacked) equations.
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Practice rounding numbers to a nearby ten or hundred to make them easier to add in your head. Learn to spot “friendly” numbers you can make by rounding before you add. Estimate the total of two numbers quickly without doing exact pencil-and-paper addition. Decide whether to round up or round down by looking at the digit in the next place.
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Practice rounding numbers to the nearest ten or hundred. Decide which place value to round to based on what the problem asks. Add the rounded numbers to find an estimated total. Read word problems and pick out the numbers that need to be added.
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Use a horizontal number line to add by making forward jumps from a starting number. Use a horizontal number line to subtract by making backward jumps from a starting number. Count and label each jump to model the addend or subtrahend correctly. Write the final landing point on the number line as the sum or difference.
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Use compensation (adding a little extra, then subtracting it back) to make friendly numbers. Solve addition problems by using doubles and near-doubles when numbers are close.
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Decide whether to use + or − to make a number sentence true.
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Practice adding two large numbers by breaking one number into place-value parts (thousands, hundreds, tens, ones) Use a number line to show each step of the addition as a separate jump Build up to the final sum by adding one place value at a time
About these worksheets
Timed drills build speed and accuracy with basic addition facts. Each worksheet contains 50 to 100 problems focused on a specific fact family — from 0s through 10s — plus mixed fact sets that combine all families. Additional drill sheets cover adding and subtracting within 20, finding ten more and ten less, adding 9s using mental math shortcuts, and adding to reach multiples of ten. These are ideal for daily warm-ups, fact fluency practice, or timed assessments.
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Find ten more or ten less than a two-digit number. Use place value to see how changing the tens digit changes the number.
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Add two numbers with sums up to 20. Subtract a number from another number and find the difference up to 20. Build speed and accuracy with basic addition and subtraction facts.
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Find 10 more or 10 less than a number by changing the tens digit. Find 100 more or 100 less than a number by changing the hundreds digit. Use place value to keep the ones digit the same when adding or subtracting tens and hundreds. Do quick mental math with three-digit numbers without writing out long addition or subtraction.
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Practice quickly adding 9 to a number. Use a mental math trick for +9, like add 10 then subtract 1. Build speed and accuracy with basic addition facts involving 9. Recognize patterns when numbers increase by 9.
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Find the number you need to add to reach the next multiple of 10. Use the ones digit to quickly figure out how far a number is from the nearest ten. Build speed and accuracy with mental addition facts that make a ten.
Add 0 to a number and see that the number stays the same. Recognize patterns in sums when one addend is always 0.
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Practice adding 1 to another number to find the total. Get faster at basic addition facts with 1. Recognize that adding 1 makes the number go up by one.
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Add 2 to a number from 1 to 10 to find the total. Memorize and recall the +2 addition facts quickly. Build speed and accuracy with basic addition facts.
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Get quick at adding 3 to another number. Build confidence with basic addition facts that include 3.
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Practice adding 4 to numbers from 1 to 10. Memorize and recall the addition facts in the 4s family quickly. Build speed and accuracy with simple mental addition.
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Practice adding 5 to another number to find the total quickly. Memorize and recall the addition facts for 5 + 1 through 5 + 10. Build speed and accuracy with simple addition without using fingers or a calculator.
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Practice adding 6 to a number from 1 to 10. Learn the addition facts in the 6s family so they come quickly from memory. Build speed and accuracy when solving simple addition problems in your head.
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Practice adding 7 to numbers from 1 to 10 quickly and accurately. Memorize and recall the basic addition facts that start with 7. Build speed with mental math when one addend is 7.
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Practice adding 8 to a number from 1 to 10. Learn the addition facts in the 8s family so they come to mind quickly. Build speed and accuracy with simple addition without using fingers or a calculator.
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Practice adding 9 to a number from 1 to 10. Get faster at 9s addition facts without using fingers or a calculator. Use a quick strategy like “add 10, then subtract 1” to solve 9s facts.
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Use the pattern that adding 10 makes the ones digit stay the same while the tens digit increases by 1. Practice doing these sums in your head without counting one by one.
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Add two numbers from 1 to 10 quickly and accurately. Recall basic addition facts without counting on fingers. Build speed and confidence with mixed addition facts.
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Practice adding 0 to a number and seeing that the number stays the same. Build speed and confidence with basic addition facts that include 0.
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Practice adding 1 to a number from 1 to 10. Get faster at basic addition facts that include +1. Notice the pattern that adding 1 makes the number go up by one. Build confidence doing simple mental math without counting on fingers.
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Add 2 to numbers from 1 to 10 quickly and accurately. Build confidence with basic addition facts so answers come to mind without counting.
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Add 3 to another number quickly and correctly. Recognize and remember the addition facts for 3 (like 3+7 and 3+9).
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Add 4 to numbers from 1 to 10 quickly and correctly. Build speed and confidence with mental math for simple addition.
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Memorize and recall the “5 plus” addition facts without counting. Build speed and accuracy with simple addition in your head.
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Add 6 to a number from 1 to 10 quickly and correctly. Memorize and recall the addition facts for the 6s. Build speed and confidence with mental math when adding a small number to 6.
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Add 7 to a number from 1 to 10 quickly and accurately. Memorize the addition facts for 7 (like 7+6 and 7+9). Use mental math to find sums without counting one by one.
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Add 8 to a number quickly and accurately. Recall the addition facts for 8 + 1 through 8 + 10 from memory. Use mental math to find sums when one addend is 8.
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Practice adding 9 to a number from 1 to 10. Use mental math to add 9 by thinking “add 10, then take 1 away.” Build confidence with quick, accurate addition without counting on fingers.
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Add 10 to a number from 1 to 10 to find the total. Use the pattern that adding 10 makes the number 10 more to solve problems quickly.
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Add two numbers from 1 to 10 quickly and accurately. Recall basic addition facts without counting on fingers.
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Practice adding a teen number to a multiple of ten Get faster at adding two-digit numbers in your head Understand how tens and ones combine when adding Build fluency with basic addition facts up to about 100
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Add a teen number to a multiple of ten Practice combining tens with numbers between 11 and 19 Build speed and accuracy with two-digit addition Recognize how the tens and ones combine when adding
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