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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 557 · 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. 1.87 × 5 =
  2. 2.23 × 50 =
  3. 3.69 × 5 =
  4. 4.84 × 50 =
  5. 5.45 × 50 =
  6. 6.19 × 50 =
  7. 7.98 × 5 =
  8. 8.96 × 50 =
  9. 9.58 × 5 =
  10. 10.36 × 50 =
  11. 11.23 × 50 =
  12. 12.50 × 50 =
  13. 13.58 × 50 =
  14. 14.35 × 50 =
  15. 15.25 × 5 =
  16. 16.59 × 5 =
  17. 17.66 × 5 =
  18. 18.18 × 50 =
  19. 19.74 × 50 =
  20. 20.54 × 5 =
  21. 21.76 × 50 =
  22. 22.34 × 50 =
  23. 23.36 × 5 =
  24. 24.37 × 50 =
  25. 25.70 × 5 =
  26. 26.26 × 50 =
  27. 27.46 × 5 =
  28. 28.87 × 50 =
  29. 29.65 × 5 =
  30. 30.15 × 5 =
  31. 31.62 × 50 =
  32. 32.59 × 50 =
  33. 33.82 × 50 =
  34. 34.92 × 50 =
  35. 35.77 × 5 =
  36. 36.39 × 5 =
  37. 37.69 × 5 =
  38. 38.74 × 50 =
  39. 39.20 × 5 =
  40. 40.96 × 5 =

Answer key

  1. 435
  2. 1150
  3. 345
  4. 4200
  5. 2250
  6. 950
  7. 490
  8. 4800
  9. 290
  10. 1800
  11. 1150
  12. 2500
  13. 2900
  14. 1750
  15. 125
  16. 295
  17. 330
  18. 900
  19. 3700
  20. 270
  21. 3800
  22. 1700
  23. 180
  24. 1850
  25. 350
  26. 1300
  27. 230
  28. 4350
  29. 325
  30. 75
  31. 3100
  32. 2950
  33. 4100
  34. 4600
  35. 385
  36. 195
  37. 345
  38. 3700
  39. 100
  40. 480

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