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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 934 · 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. 1.67 × 5 =
  2. 2.97 × 50 =
  3. 3.23 × 50 =
  4. 4.39 × 5 =
  5. 5.66 × 5 =
  6. 6.38 × 5 =
  7. 7.36 × 5 =
  8. 8.14 × 50 =
  9. 9.37 × 50 =
  10. 10.60 × 5 =
  11. 11.16 × 5 =
  12. 12.87 × 50 =
  13. 13.57 × 5 =
  14. 14.88 × 50 =
  15. 15.74 × 5 =
  16. 16.87 × 50 =
  17. 17.65 × 50 =
  18. 18.59 × 50 =
  19. 19.70 × 50 =
  20. 20.93 × 50 =
  21. 21.33 × 50 =
  22. 22.77 × 50 =
  23. 23.16 × 5 =
  24. 24.98 × 50 =
  25. 25.85 × 50 =
  26. 26.69 × 5 =
  27. 27.65 × 5 =
  28. 28.92 × 5 =
  29. 29.25 × 5 =
  30. 30.85 × 5 =
  31. 31.87 × 50 =
  32. 32.66 × 5 =
  33. 33.74 × 50 =
  34. 34.13 × 50 =
  35. 35.73 × 50 =
  36. 36.65 × 5 =
  37. 37.55 × 50 =
  38. 38.18 × 5 =
  39. 39.76 × 5 =
  40. 40.19 × 5 =

Answer key

  1. 335
  2. 4850
  3. 1150
  4. 195
  5. 330
  6. 190
  7. 180
  8. 700
  9. 1850
  10. 300
  11. 80
  12. 4350
  13. 285
  14. 4400
  15. 370
  16. 4350
  17. 3250
  18. 2950
  19. 3500
  20. 4650
  21. 1650
  22. 3850
  23. 80
  24. 4900
  25. 4250
  26. 345
  27. 325
  28. 460
  29. 125
  30. 425
  31. 4350
  32. 330
  33. 3700
  34. 650
  35. 3650
  36. 325
  37. 2750
  38. 90
  39. 380
  40. 95

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