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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 1 · 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. 1.40 × 50 =
  2. 2.28 × 5 =
  3. 3.56 × 50 =
  4. 4.91 × 5 =
  5. 5.32 × 50 =
  6. 6.54 × 5 =
  7. 7.51 × 50 =
  8. 8.66 × 5 =
  9. 9.88 × 5 =
  10. 10.55 × 50 =
  11. 11.20 × 5 =
  12. 12.32 × 5 =
  13. 13.89 × 5 =
  14. 14.39 × 5 =
  15. 15.61 × 50 =
  16. 16.17 × 5 =
  17. 17.49 × 50 =
  18. 18.49 × 50 =
  19. 19.35 × 5 =
  20. 20.65 × 5 =
  21. 21.32 × 5 =
  22. 22.59 × 50 =
  23. 23.68 × 50 =
  24. 24.80 × 5 =
  25. 25.44 × 5 =
  26. 26.13 × 5 =
  27. 27.12 × 5 =
  28. 28.33 × 5 =
  29. 29.12 × 5 =
  30. 30.19 × 50 =
  31. 31.16 × 50 =
  32. 32.32 × 50 =
  33. 33.39 × 50 =
  34. 34.57 × 50 =
  35. 35.53 × 50 =
  36. 36.70 × 5 =
  37. 37.54 × 50 =
  38. 38.73 × 50 =
  39. 39.23 × 50 =
  40. 40.87 × 5 =

Answer key

  1. 2000
  2. 140
  3. 2800
  4. 455
  5. 1600
  6. 270
  7. 2550
  8. 330
  9. 440
  10. 2750
  11. 100
  12. 160
  13. 445
  14. 195
  15. 3050
  16. 85
  17. 2450
  18. 2450
  19. 175
  20. 325
  21. 160
  22. 2950
  23. 3400
  24. 400
  25. 220
  26. 65
  27. 60
  28. 165
  29. 60
  30. 950
  31. 800
  32. 1600
  33. 1950
  34. 2850
  35. 2650
  36. 350
  37. 2700
  38. 3650
  39. 1150
  40. 435

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