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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 524 · 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. 2.97 × 50 =
  3. 3.98 × 5 =
  4. 4.81 × 5 =
  5. 5.68 × 5 =
  6. 6.62 × 5 =
  7. 7.54 × 50 =
  8. 8.86 × 5 =
  9. 9.69 × 5 =
  10. 10.14 × 50 =
  11. 11.88 × 5 =
  12. 12.63 × 50 =
  13. 13.44 × 5 =
  14. 14.77 × 5 =
  15. 15.28 × 50 =
  16. 16.90 × 5 =
  17. 17.65 × 5 =
  18. 18.77 × 50 =
  19. 19.96 × 5 =
  20. 20.66 × 50 =
  21. 21.72 × 50 =
  22. 22.49 × 50 =
  23. 23.18 × 50 =
  24. 24.72 × 5 =
  25. 25.59 × 50 =
  26. 26.47 × 50 =
  27. 27.72 × 50 =
  28. 28.44 × 5 =
  29. 29.83 × 50 =
  30. 30.40 × 5 =
  31. 31.98 × 50 =
  32. 32.90 × 5 =
  33. 33.31 × 5 =
  34. 34.64 × 50 =
  35. 35.42 × 50 =
  36. 36.85 × 50 =
  37. 37.27 × 5 =
  38. 38.86 × 5 =
  39. 39.75 × 50 =
  40. 40.14 × 50 =

Answer key

  1. 435
  2. 4850
  3. 490
  4. 405
  5. 340
  6. 310
  7. 2700
  8. 430
  9. 345
  10. 700
  11. 440
  12. 3150
  13. 220
  14. 385
  15. 1400
  16. 450
  17. 325
  18. 3850
  19. 480
  20. 3300
  21. 3600
  22. 2450
  23. 900
  24. 360
  25. 2950
  26. 2350
  27. 3600
  28. 220
  29. 4150
  30. 200
  31. 4900
  32. 450
  33. 155
  34. 3200
  35. 2100
  36. 4250
  37. 135
  38. 430
  39. 3750
  40. 700

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