Common Core: 1.NBT.C.4
Problem 18 of 27g1-018
Max has 43 blocks. He gets 5 more. How many blocks does he have now?
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Solution walkthrough0:46
- Max has 43 blocks: 4 tens (10, 20, 30, 40) and 3 ones (41, 42, 43).
- He gets 5 more ones. Ones go with the ones: 44, 45, 46, 47, 48.
- The tens stay 4 tens. 3 ones and 5 ones make 8 ones. So 43 + 5 = 48.
- Add ones to the ones, not to the tens. Great adding!