Fact families and the equal sign: printable worksheets
Fact-family triangles, related facts, true or false equations and balance equations within 10 or 20.
Sample worksheet
The first 4 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.
Same? Circle T or F.
8 = 5 + 3
- T
- F
2.
Same? Circle T or F.
1 = 2
- T
- F
3.
Same? Circle T or F.
6 − 5 = 2
- T
- F
4.
Same? Circle T or F.
4 + 4 = 8
- T
- F
Show answers
1.T ()
2.F ()
3.F ()
4.T ()
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.B.3: Apply properties of operations as strategies to add and subtract. (unverified)
- 1.OA.B.4: Understand subtraction as an unknown-addend problem. (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: Subtraction within 20 (Grade 1)
- Next: Addition within 100 (Grade 2)