Subtraction within 20: printable worksheets
Subtract within 20 without and with crossing ten, missing numbers and true or false.
Sample worksheet
The first 6 problems of a real worksheet, made the way the builder makes it. Open it in the builder to change the number of problems, the difficulty and the layout, then print.
1.
5 − 1 =
2.
14
−2
3.
18 − 7 =
4.
12
−2
5.
19 − 1 =
6.
14
−1
Show answers
1.
2.
14
−2
12
3.
4.
12
−2
10
5.
6.
14
−1
13
What students practise
I can add and subtract within 20 using strategies.
Students add and subtract within 20 with strategies such as counting on, making ten and doubles, and find missing addends.
Key words
- sum
- the answer to an addition problem
- addend
- a number being added
- make ten
- break a number apart to complete a ten
Common mistakes
- Counts the starting number again when counting on.
- Reads the equal sign as "the answer comes next".
Standards
Common Core State Standards this worksheet practises.
- 1.OA.A.1: Use addition and subtraction within 20 to solve word problems. (unverified)
- 1.OA.B.4: Understand subtraction as an unknown-addend problem. (unverified)
- 1.OA.C.5: Relate counting to addition and subtraction. (unverified)
- 1.OA.C.6: Add and subtract within 20, using strategies such as making ten. (unverified)
- 1.OA.D.7: Understand the equal sign and decide whether equations are true or false. (unverified)
- 1.OA.D.8: Find the unknown whole number in an addition or subtraction equation. (unverified)
Related topics
- Before this: Addition within 20 (Grade 1)
- Next: Subtraction within 100 (Grade 2)