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Grade 4 · Math

Multiply using place value

Break a multi-digit factor into useful parts and combine partial products.

8 authored questions + worked example

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Worked example

What is 23 × 4?

Answer & why

Answer: 92

Split 23 into 20 + 3: 20 × 4 = 80, and 3 × 4 = 12. Add them to get 92.

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All questions

All 8 authored questions for this skill.

Question 1

What is 24 × 23?

  1. 562
  2. 552
  3. 551
  4. 553
A hint

Split one factor into tens and ones. Multiply both parts, then add.

Answer & why

Answer: 552

Split 24 into 20 + 4: 20 × 23 = 460, and 4 × 23 = 92. Add them to get 552.

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Question 2

What is 46 × 15?

  1. 691
  2. 690
  3. 689
  4. 700
A hint

Split one factor into tens and ones. Multiply both parts, then add.

Answer & why

Answer: 690

Split 46 into 40 + 6: 40 × 15 = 600, and 6 × 15 = 90. Add them to get 690.

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Question 3

What is 23 × 4?

  1. 93
  2. 91
  3. 92
  4. 102
A hint

Split one factor into tens and ones. Multiply both parts, then add.

Answer & why

Answer: 92

Split 23 into 20 + 3: 20 × 4 = 80, and 3 × 4 = 12. Add them to get 92.

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Question 4

What is 36 × 5?

  1. 180
  2. 179
  3. 190
  4. 181
A hint

Split one factor into tens and ones. Multiply both parts, then add.

Answer & why

Answer: 180

Split 36 into 30 + 6: 30 × 5 = 150, and 6 × 5 = 30. Add them to get 180.

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Question 5

What is 48 × 6?

  1. 289
  2. 287
  3. 298
  4. 288
A hint

Split one factor into tens and ones. Multiply both parts, then add.

Answer & why

Answer: 288

Split 48 into 40 + 8: 40 × 6 = 240, and 8 × 6 = 48. Add them to get 288.

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Question 6

What is 127 × 3?

  1. 382
  2. 381
  3. 380
  4. 391
A hint

Split one factor into tens and ones. Multiply both parts, then add.

Answer & why

Answer: 381

Split 127 into 120 + 7: 120 × 3 = 360, and 7 × 3 = 21. Add them to get 381.

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Question 7

What is 214 × 4?

  1. 857
  2. 856
  3. 855
  4. 866
A hint

Split one factor into tens and ones. Multiply both parts, then add.

Answer & why

Answer: 856

Split 214 into 210 + 4: 210 × 4 = 840, and 4 × 4 = 16. Add them to get 856.

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Question 8

What is 32 × 12?

  1. 384
  2. 394
  3. 385
  4. 383
A hint

Split one factor into tens and ones. Multiply both parts, then add.

Answer & why

Answer: 384

Split 32 into 30 + 2: 30 × 12 = 360, and 2 × 12 = 24. Add them to get 384.

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