Review — Difficulty 9/10
2.NBT.B.9 · Explain why addition and subtraction strategies work, using place val…
Review skills for this standard. Write answers where shown.
Together with a parent
1. Discuss: Explain why addition and subtraction strategies work, using place value and the … 2. What was easy? What was tricky? 3. Use the diagram to model one example.
Written review
1. Write the value of the underlined digit in 274: ___ 2. 44 = ___ tens + ___ ones 3. Expanded form: 54 = ___ + ___ 4. Which is greater: 39 or 46? ___ 5. Write the numeral: 7 tens and 5 ones → ___ 6. Round 61 to the nearest ten: ___
_See printable PDF for diagram._
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Skills checklist
- [ ] Identifies value of each digit
- [ ] Writes expanded form
- [ ] Reads and writes numbers in standard form
- [ ] Explains Explain why addition and subtraction strategies work, using place val… without prompts
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