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Missing Factors

Grade 3 · Stretch challenge · 14 questions · Version PG-18IH9CX-7PG0

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1.45 x __ = 180
2.161 x __ = 1288
3.92 x __ = 1012
4.161 x __ = 805
5.234 x __ = 1404
6.430 x __ = 3010
7.298 x __ = 1192
8.431 x __ = 862
9.382 x __ = 2292
10.321 x __ = 1284
11.149 x __ = 298
12.401 x __ = 4010
13.14 x __ = 70
14.128 x __ = 768

Answers and teaching notes

Use the answers to check the work after the learner finishes. For writing prompts, the guide describes what a strong response should include.

Show answers for version 19
  1. 45 x __ = 1804
  2. 161 x __ = 12888
  3. 92 x __ = 101211
  4. 161 x __ = 8055
  5. 234 x __ = 14046
  6. 430 x __ = 30107
  7. 298 x __ = 11924
  8. 431 x __ = 8622
  9. 382 x __ = 22926
  10. 321 x __ = 12844
  11. 149 x __ = 2982
  12. 401 x __ = 401010
  13. 14 x __ = 705
  14. 128 x __ = 7686

Worked example

7 x __ = 42. Since 42 / 7 = 6, the missing factor is 6.

Common mistake

Multiplying the known factor and product together.

Helpful hint

Use the related division fact.