About this worksheet
Twelve problems that subtract a multiple of 10 from another, like 70 − 30, 50 − 20 and 90 − 40. A reminder at the top shows the trick: 50 − 20 is really 5 tens take away 2 tens, which leaves 3 tens, or 30.
This is the place value side of first grade subtraction. A child who already knows 5 − 2 finds they also know 50 − 20, and that is a big moment for number sense.
Problems like 40 − 40 are there to check that zero tens makes sense too. It is a short page and a good one to follow up with base ten blocks if a child needs to see it.
What students will practice
- Subtract multiples of 10 from 10 to 90
- Think of numbers as groups of tens
- Connect 5 − 2 to 50 − 20
Details
- Grade level
- Grade 1
- Subject
- Math · Subtraction
- Standard
- CCSS 1.NBT.6
- Pages
- 1
- Format
- PDF · US Letter and A4 included
- License
- Free for classroom use · Attribution appreciated
- Last updated
- September 26, 2026
