Practice Problems — Set 9
K.OA.A.3 · Decompose numbers to 10
Print and write your answers. Use diagrams to show thinking.
Warm-up
1. Talk through today's focus: Decompose numbers to 10 2. Try one oral example together before writing. 3. Use the diagram to explain your thinking.
_See printable PDF for diagram._
Written practice
1. 9 = ___ + ___ 2. Show two ways to make 7 with a drawing. 3. Fill in: 7 = 3 + ___ 4. Use two colors on a ten-frame for 9. 5. Write another equation for 7: ___ + ___ = ___ 6. Which is greater: the parts or the whole? Explain. 7. Apply Decompose numbers to 10 (item 7, set 9): show your work. ___ 8. Apply Decompose numbers to 10 (item 8, set 9): show your work. ___
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More written practice
1. Apply Decompose numbers to 10 (item 9, set 9): show your work. ___ 2. Apply Decompose numbers to 10 (item 10, set 9): show your work. ___ 3. Apply Decompose numbers to 10 (item 11, set 9): show your work. ___ 4. Apply Decompose numbers to 10 (item 12, set 9): show your work. ___ 5. Apply Decompose numbers to 10 (item 13, set 9): show your work. ___ 6. Apply Decompose numbers to 10 (item 14, set 9): show your work. ___
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Patterns and rules
1. Teen numbers are 10 and some ones. 2. Partners that make 10 help with quick facts. 3. The whole equals the sum of the parts.
_See printable PDF for diagram._
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Parent tip: Shake and spill counters on a ten-frame