Grade 1 · Math
Subtract within twenty practice
Use subtraction to find a difference within twenty.
Opening your practice adventure…
Try a sample
What is 13 − 6?
- 7
- 5
- 10
- 8
See the answer & why
7
13 − 6 = 7. Check by adding 6 back.
A little hint: Use place value or a known fact; estimate before choosing.
A teaching tip
Break apart the number being subtracted or count back through ten.