Practice Problems — Set 4

1.NBT.C.4 · Add within 100, including adding a two-digit number and a one-digit n…

Print and write your answers. Use diagrams to show thinking.

Warm-up

1. Write the value of the underlined digit in 175: ___ 2. 35 = ___ tens + ___ ones 3. Expanded form: 45 = ___ + ___

_See printable PDF for diagram._

Written practice

1. Write the value of the underlined digit in 164: ___ 2. 34 = ___ tens + ___ ones 3. Expanded form: 44 = ___ + ___ 4. Which is greater: 29 or 36? ___ 5. Write the numeral: 6 tens and 7 ones → ___ 6. Round 51 to the nearest ten: ___ 7. Write the value of the underlined digit in 197: ___ 8. 37 = ___ tens + ___ ones

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More written practice

1. Expanded form: 47 = ___ + ___ 2. Which is greater: 32 or 39? ___ 3. Write the numeral: 6 tens and 4 ones → ___ 4. Round 54 to the nearest ten: ___ 5. Write the value of the underlined digit in 230: ___ 6. 40 = ___ tens + ___ ones

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Patterns and rules

1. Write the value of the underlined digit in 351: ___ 2. 51 = ___ tens + ___ ones 3. Expanded form: 61 = ___ + ___

_See printable PDF for diagram._

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Parent tip: Use base-ten blocks or place-value charts