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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 112 · 40 questions
TalentJR

The fast method (Halve first): Halve the number. × 5: multiply the half by 10. × 50: multiply the half by 100. Odd number? Its half ends in .5 — 43 → 21.5 — and × 10 moves the point: 215.

NameDateTime takenScore ___ / 40
  1. 1.43 × 50 =
  2. 2.94 × 5 =
  3. 3.50 × 50 =
  4. 4.87 × 50 =
  5. 5.82 × 50 =
  6. 6.85 × 5 =
  7. 7.88 × 5 =
  8. 8.59 × 50 =
  9. 9.42 × 5 =
  10. 10.35 × 5 =
  11. 11.70 × 50 =
  12. 12.47 × 50 =
  13. 13.75 × 5 =
  14. 14.32 × 5 =
  15. 15.71 × 50 =
  16. 16.16 × 50 =
  17. 17.87 × 50 =
  18. 18.47 × 50 =
  19. 19.69 × 50 =
  20. 20.93 × 50 =
  21. 21.86 × 50 =
  22. 22.59 × 5 =
  23. 23.68 × 50 =
  24. 24.12 × 5 =
  25. 25.59 × 50 =
  26. 26.57 × 5 =
  27. 27.66 × 5 =
  28. 28.53 × 50 =
  29. 29.79 × 50 =
  30. 30.14 × 5 =
  31. 31.86 × 5 =
  32. 32.86 × 5 =
  33. 33.21 × 5 =
  34. 34.53 × 50 =
  35. 35.29 × 50 =
  36. 36.76 × 50 =
  37. 37.58 × 50 =
  38. 38.26 × 5 =
  39. 39.14 × 50 =
  40. 40.49 × 50 =

Answer key

  1. 2150
  2. 470
  3. 2500
  4. 4350
  5. 4100
  6. 425
  7. 440
  8. 2950
  9. 210
  10. 175
  11. 3500
  12. 2350
  13. 375
  14. 160
  15. 3550
  16. 800
  17. 4350
  18. 2350
  19. 3450
  20. 4650
  21. 4300
  22. 295
  23. 3400
  24. 60
  25. 2950
  26. 285
  27. 330
  28. 2650
  29. 3950
  30. 70
  31. 430
  32. 430
  33. 105
  34. 2650
  35. 1450
  36. 3800
  37. 2900
  38. 130
  39. 700
  40. 2450

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