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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 333 · 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. 1.12 × 50 =
  2. 2.18 × 5 =
  3. 3.28 × 5 =
  4. 4.79 × 5 =
  5. 5.58 × 50 =
  6. 6.19 × 5 =
  7. 7.16 × 50 =
  8. 8.28 × 5 =
  9. 9.32 × 50 =
  10. 10.42 × 5 =
  11. 11.31 × 50 =
  12. 12.15 × 50 =
  13. 13.16 × 5 =
  14. 14.85 × 5 =
  15. 15.60 × 50 =
  16. 16.44 × 50 =
  17. 17.25 × 5 =
  18. 18.75 × 50 =
  19. 19.14 × 50 =
  20. 20.48 × 50 =
  21. 21.89 × 50 =
  22. 22.66 × 50 =
  23. 23.53 × 50 =
  24. 24.95 × 50 =
  25. 25.75 × 5 =
  26. 26.87 × 5 =
  27. 27.51 × 5 =
  28. 28.89 × 50 =
  29. 29.18 × 50 =
  30. 30.95 × 5 =
  31. 31.57 × 50 =
  32. 32.19 × 50 =
  33. 33.64 × 5 =
  34. 34.71 × 5 =
  35. 35.21 × 5 =
  36. 36.28 × 5 =
  37. 37.92 × 50 =
  38. 38.76 × 5 =
  39. 39.97 × 5 =
  40. 40.17 × 50 =

Answer key

  1. 600
  2. 90
  3. 140
  4. 395
  5. 2900
  6. 95
  7. 800
  8. 140
  9. 1600
  10. 210
  11. 1550
  12. 750
  13. 80
  14. 425
  15. 3000
  16. 2200
  17. 125
  18. 3750
  19. 700
  20. 2400
  21. 4450
  22. 3300
  23. 2650
  24. 4750
  25. 375
  26. 435
  27. 255
  28. 4450
  29. 900
  30. 475
  31. 2850
  32. 950
  33. 320
  34. 355
  35. 105
  36. 140
  37. 4600
  38. 380
  39. 485
  40. 850

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