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Grade 1 Math · World 5: Hundred Hill · Level 39
Taking Away within 100
48 − 5, and 67 − 30.
Warm-up, learn, try it together, practice, then a quick check. About 15 minutes.
What children learn in Level 39
- 48 minus 5: take away from the ones. 8 ones minus 5 ones is 3 ones. The 4 tens stay. 43!
- Your turn! Tap to take away 3 tens and 2 ones from 67.
- 6 tens minus 3 tens is 3 tens. 7 ones minus 2 ones is 5 ones. 67 minus 32 is 35!
- Tens from tens, ones from ones.
Georgia's K-12 Mathematics Standards:
- 1.NR.5.1 — Use a variety of strategies to solve applicable, mathematical addition and subtraction problems with one- and two-digit whole numbers.
- 1.NR.5.3 — Add and subtract multiples of 10 within 100.