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Missing Factors

Grade 3 · Building confidence · 14 questions · Version PG-1VU66E7-NLI8

Four children and a teacher collaborate with blocks, patterns, and a notebook.
1.

31 x __ = 279

2.

29 x __ = 145

3.

84 x __ = 672

4.

115 x __ = 920

5.

33 x __ = 132

6.

77 x __ = 693

7.

47 x __ = 423

8.

45 x __ = 315

9.

88 x __ = 440

10.

74 x __ = 814

11.

57 x __ = 456

12.

58 x __ = 290

13.

63 x __ = 567

14.

79 x __ = 948

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. 31 x __ = 2799
  2. 29 x __ = 1455
  3. 84 x __ = 6728
  4. 115 x __ = 9208
  5. 33 x __ = 1324
  6. 77 x __ = 6939
  7. 47 x __ = 4239
  8. 45 x __ = 3157
  9. 88 x __ = 4405
  10. 74 x __ = 81411
  11. 57 x __ = 4568
  12. 58 x __ = 2905
  13. 63 x __ = 5679
  14. 79 x __ = 94812

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.