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Grade 2 Math · World 3: Hundred Harbor · Level 30
Tens from Tens, Ones from Ones
76 − 34 by place value.
Warm-up, learn, try it together, practice, then a quick check. About 15 minutes.
What children learn in Level 30
- Let's work out 76 minus 34. Start with 76.
- 34 is 3 tens and 4 ones. Tap to take them away!
- 4 tens and 2 ones are left: 42! Tens: 70 minus 30 is 40. Ones: 6 minus 4 is 2.
- Try 58 minus 23 in your head: 50 minus 20 is 30, and 8 minus 3 is 5. That's 35!
Georgia's K-12 Mathematics Standards:
- 2.NR.2.4 — Fluently add and subtract within 100 using strategies based on place value, properties of operations, and/or the relationship between addition and subtraction.