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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 574 · 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. 1.84 × 5 =
  2. 2.65 × 50 =
  3. 3.31 × 5 =
  4. 4.27 × 50 =
  5. 5.42 × 5 =
  6. 6.73 × 50 =
  7. 7.29 × 50 =
  8. 8.32 × 50 =
  9. 9.26 × 5 =
  10. 10.13 × 50 =
  11. 11.58 × 50 =
  12. 12.16 × 5 =
  13. 13.25 × 50 =
  14. 14.85 × 5 =
  15. 15.37 × 50 =
  16. 16.42 × 5 =
  17. 17.87 × 5 =
  18. 18.76 × 50 =
  19. 19.28 × 5 =
  20. 20.50 × 5 =
  21. 21.60 × 50 =
  22. 22.28 × 50 =
  23. 23.98 × 5 =
  24. 24.33 × 50 =
  25. 25.83 × 50 =
  26. 26.29 × 50 =
  27. 27.83 × 50 =
  28. 28.35 × 5 =
  29. 29.19 × 50 =
  30. 30.74 × 5 =
  31. 31.33 × 50 =
  32. 32.78 × 5 =
  33. 33.90 × 50 =
  34. 34.57 × 50 =
  35. 35.51 × 5 =
  36. 36.73 × 5 =
  37. 37.51 × 5 =
  38. 38.81 × 5 =
  39. 39.60 × 50 =
  40. 40.48 × 5 =

Answer key

  1. 420
  2. 3250
  3. 155
  4. 1350
  5. 210
  6. 3650
  7. 1450
  8. 1600
  9. 130
  10. 650
  11. 2900
  12. 80
  13. 1250
  14. 425
  15. 1850
  16. 210
  17. 435
  18. 3800
  19. 140
  20. 250
  21. 3000
  22. 1400
  23. 490
  24. 1650
  25. 4150
  26. 1450
  27. 4150
  28. 175
  29. 950
  30. 370
  31. 1650
  32. 390
  33. 4500
  34. 2850
  35. 255
  36. 365
  37. 255
  38. 405
  39. 3000
  40. 240

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