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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 562 · 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. 1.85 × 50 =
  2. 2.78 × 5 =
  3. 3.76 × 5 =
  4. 4.80 × 5 =
  5. 5.52 × 5 =
  6. 6.27 × 50 =
  7. 7.43 × 5 =
  8. 8.93 × 50 =
  9. 9.61 × 5 =
  10. 10.16 × 5 =
  11. 11.87 × 50 =
  12. 12.16 × 50 =
  13. 13.78 × 50 =
  14. 14.39 × 5 =
  15. 15.49 × 50 =
  16. 16.16 × 5 =
  17. 17.27 × 50 =
  18. 18.76 × 5 =
  19. 19.91 × 50 =
  20. 20.51 × 50 =
  21. 21.22 × 50 =
  22. 22.33 × 5 =
  23. 23.64 × 5 =
  24. 24.28 × 50 =
  25. 25.39 × 5 =
  26. 26.17 × 50 =
  27. 27.83 × 50 =
  28. 28.13 × 50 =
  29. 29.69 × 50 =
  30. 30.39 × 5 =
  31. 31.83 × 50 =
  32. 32.36 × 5 =
  33. 33.79 × 5 =
  34. 34.28 × 5 =
  35. 35.59 × 50 =
  36. 36.14 × 5 =
  37. 37.42 × 5 =
  38. 38.60 × 50 =
  39. 39.52 × 5 =
  40. 40.19 × 50 =

Answer key

  1. 4250
  2. 390
  3. 380
  4. 400
  5. 260
  6. 1350
  7. 215
  8. 4650
  9. 305
  10. 80
  11. 4350
  12. 800
  13. 3900
  14. 195
  15. 2450
  16. 80
  17. 1350
  18. 380
  19. 4550
  20. 2550
  21. 1100
  22. 165
  23. 320
  24. 1400
  25. 195
  26. 850
  27. 4150
  28. 650
  29. 3450
  30. 195
  31. 4150
  32. 180
  33. 395
  34. 140
  35. 2950
  36. 70
  37. 210
  38. 3000
  39. 260
  40. 950

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