Practice Problems — Set 18

1.NBT.A.1 · Count to 120, starting at any number less than 120

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

Warm-up

1. Talk through today's focus: Count to 120, starting at any number less than 120 2. Try one oral example together before writing. 3. Use the diagram to explain your thinking.

_See printable PDF for diagram._

Written practice

1. Compare: 5 ___ 6 (write >, <, or =) 2. Which is greater: 20 or 23? ___ 3. Put numerals in order: 7, 3, 9 4. Circle the smaller: 22 or 26 5. On the number line, is 23 left or right of 21? 6. Write a numeral less than 8: ___ 7. Explain your thinking for set 18 in one sentence. 8. Create your own problem for 1.NBT.A.1.

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More written practice

1. Apply Count to 120, starting at any number less than 120 (item 9, set 18): show your work. ___ 2. Apply Count to 120, starting at any number less than 120 (item 10, set 18): show your work. ___ 3. Apply Count to 120, starting at any number less than 120 (item 11, set 18): show your work. ___ 4. Apply Count to 120, starting at any number less than 120 (item 12, set 18): show your work. ___ 5. Apply Count to 120, starting at any number less than 120 (item 13, set 18): show your work. ___ 6. Apply Count to 120, starting at any number less than 120 (item 14, set 18): show your work. ___

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Patterns and rules

1. Greater means more / farther right on the number line. 2. Equal groups have the same count. 3. Write > , < , or = and read it aloud.

_See printable PDF for diagram._

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Stretch

1. Create your own 1.NBT.A.1 question for a parent to solve. 2. Explain your method in two sentences.

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Parent tip: Use a number line to compare positions