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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 610 · 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. 2.89 × 5 =
  3. 3.80 × 50 =
  4. 4.68 × 50 =
  5. 5.96 × 50 =
  6. 6.81 × 50 =
  7. 7.70 × 5 =
  8. 8.24 × 5 =
  9. 9.29 × 50 =
  10. 10.15 × 50 =
  11. 11.17 × 5 =
  12. 12.65 × 50 =
  13. 13.42 × 5 =
  14. 14.19 × 50 =
  15. 15.42 × 50 =
  16. 16.88 × 50 =
  17. 17.95 × 50 =
  18. 18.92 × 5 =
  19. 19.93 × 50 =
  20. 20.86 × 5 =
  21. 21.40 × 5 =
  22. 22.33 × 50 =
  23. 23.97 × 50 =
  24. 24.59 × 50 =
  25. 25.93 × 5 =
  26. 26.21 × 5 =
  27. 27.19 × 50 =
  28. 28.83 × 50 =
  29. 29.19 × 5 =
  30. 30.60 × 50 =
  31. 31.21 × 5 =
  32. 32.59 × 5 =
  33. 33.89 × 50 =
  34. 34.91 × 50 =
  35. 35.97 × 50 =
  36. 36.35 × 5 =
  37. 37.51 × 50 =
  38. 38.28 × 50 =
  39. 39.68 × 5 =
  40. 40.50 × 50 =

Answer key

  1. 650
  2. 445
  3. 4000
  4. 3400
  5. 4800
  6. 4050
  7. 350
  8. 120
  9. 1450
  10. 750
  11. 85
  12. 3250
  13. 210
  14. 950
  15. 2100
  16. 4400
  17. 4750
  18. 460
  19. 4650
  20. 430
  21. 200
  22. 1650
  23. 4850
  24. 2950
  25. 465
  26. 105
  27. 950
  28. 4150
  29. 95
  30. 3000
  31. 105
  32. 295
  33. 4450
  34. 4550
  35. 4850
  36. 175
  37. 2550
  38. 1400
  39. 340
  40. 2500

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