Grade 1 addition worksheets

In first grade, children add single-digit numbers and practice the addition facts with numbers from 0 to 10. They solve addition problems with a missing number (missing addend), and use addition to solve simple subtraction problems. Children also learn some about 2-digit addition though that topic is continued in 2nd grade.

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Jump to worksheets for:

• Single-digit addition
• Two-digit addition

Single-digit addition

• Adding two single-digit numbers - sum 7 or less
• Adding two single-digit numbers - sum 10 or less


• Missing addend - sums with 6
• Missing addend - sums with 7
• Missing addend - sums with 8
• Missing addend - sums with 9
• Missing addend - sums with 10


• Missing addend random - sum max 10
• Missing addend random within 10 and 20
• Missing addend random within 1 and 20


• Add three numbers within 20


• Adding whole tens (2 addends)
• Add whole tens (3 addends)
• Missing addend - whole tens


• Complete the next ten
• Add a 2-digit number and a 1-digit number mentally - within the same ten
• Add two single-digit numbers using the “trick” with nine and eight


• Add two single-digit numbers using mental math strategies, such as the trick with nine and eight, doubles or  “doubles plus one more”. Students are not required to remember these sums by heart in 1st grade.

Two-Digit Addition

• Add a 2-digit number and a 1-digit number in columns - no regrouping/carrying
• Add two 2-digit numbers in columns - no regrouping/carrying
• Add a 2-digit number and a single-digit number in columns - figure out the missing addend
• Add two 2-digit numbers in columns - figure out the missing addend

Students should be provided a 100-bead abacus, base ten blocks, or some other manipulative for the addition problems in the worksheet below. They are not required to solve the problems by writing one number under the other (pencil & paper). The idea is to use a manipulative.

• Add two 2-digit numbers using a manipulative

See also

Worksheets for number bonds

Grade 1 subtraction worksheets

Addition worksheets for grade 2