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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 646 · 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. 1.13 × 50 =
  2. 2.62 × 5 =
  3. 3.40 × 50 =
  4. 4.21 × 50 =
  5. 5.44 × 5 =
  6. 6.25 × 5 =
  7. 7.87 × 5 =
  8. 8.86 × 5 =
  9. 9.61 × 50 =
  10. 10.74 × 50 =
  11. 11.31 × 5 =
  12. 12.63 × 50 =
  13. 13.53 × 50 =
  14. 14.69 × 50 =
  15. 15.52 × 50 =
  16. 16.36 × 50 =
  17. 17.95 × 50 =
  18. 18.71 × 50 =
  19. 19.83 × 50 =
  20. 20.18 × 50 =
  21. 21.83 × 5 =
  22. 22.31 × 5 =
  23. 23.58 × 5 =
  24. 24.27 × 5 =
  25. 25.13 × 50 =
  26. 26.29 × 5 =
  27. 27.42 × 5 =
  28. 28.36 × 5 =
  29. 29.79 × 5 =
  30. 30.31 × 50 =
  31. 31.44 × 5 =
  32. 32.71 × 50 =
  33. 33.71 × 5 =
  34. 34.56 × 50 =
  35. 35.22 × 50 =
  36. 36.24 × 5 =
  37. 37.59 × 50 =
  38. 38.67 × 5 =
  39. 39.42 × 50 =
  40. 40.36 × 5 =

Answer key

  1. 650
  2. 310
  3. 2000
  4. 1050
  5. 220
  6. 125
  7. 435
  8. 430
  9. 3050
  10. 3700
  11. 155
  12. 3150
  13. 2650
  14. 3450
  15. 2600
  16. 1800
  17. 4750
  18. 3550
  19. 4150
  20. 900
  21. 415
  22. 155
  23. 290
  24. 135
  25. 650
  26. 145
  27. 210
  28. 180
  29. 395
  30. 1550
  31. 220
  32. 3550
  33. 355
  34. 2800
  35. 1100
  36. 120
  37. 2950
  38. 335
  39. 2100
  40. 180

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