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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 430 · 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. 1.88 × 5 =
  2. 2.18 × 50 =
  3. 3.32 × 5 =
  4. 4.16 × 50 =
  5. 5.98 × 50 =
  6. 6.68 × 50 =
  7. 7.76 × 5 =
  8. 8.38 × 5 =
  9. 9.25 × 50 =
  10. 10.18 × 5 =
  11. 11.70 × 50 =
  12. 12.39 × 5 =
  13. 13.66 × 5 =
  14. 14.67 × 5 =
  15. 15.58 × 5 =
  16. 16.84 × 5 =
  17. 17.66 × 5 =
  18. 18.60 × 50 =
  19. 19.85 × 50 =
  20. 20.90 × 5 =
  21. 21.30 × 5 =
  22. 22.59 × 5 =
  23. 23.26 × 5 =
  24. 24.30 × 50 =
  25. 25.12 × 50 =
  26. 26.74 × 50 =
  27. 27.94 × 5 =
  28. 28.69 × 50 =
  29. 29.54 × 50 =
  30. 30.61 × 50 =
  31. 31.23 × 5 =
  32. 32.86 × 50 =
  33. 33.17 × 50 =
  34. 34.59 × 50 =
  35. 35.23 × 5 =
  36. 36.19 × 50 =
  37. 37.26 × 5 =
  38. 38.79 × 5 =
  39. 39.36 × 50 =
  40. 40.89 × 50 =

Answer key

  1. 440
  2. 900
  3. 160
  4. 800
  5. 4900
  6. 3400
  7. 380
  8. 190
  9. 1250
  10. 90
  11. 3500
  12. 195
  13. 330
  14. 335
  15. 290
  16. 420
  17. 330
  18. 3000
  19. 4250
  20. 450
  21. 150
  22. 295
  23. 130
  24. 1500
  25. 600
  26. 3700
  27. 470
  28. 3450
  29. 2700
  30. 3050
  31. 115
  32. 4300
  33. 850
  34. 2950
  35. 115
  36. 950
  37. 130
  38. 395
  39. 1800
  40. 4450

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