Subtraction with Regrouping Question
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Grade 2 Subtraction with Regrouping CCSS: 2.NBT.B.5
What is the rule for this input/output table?
| Input | Output |
|---|---|
| 33 | 21 |
| 50 | 38 |
| 78 | 66 |
| 91 | 79 |
- add 12
- add 17
- subtract 12
- subtract 17