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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 500 · 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. 1.18 × 5 =
  2. 2.73 × 50 =
  3. 3.75 × 50 =
  4. 4.41 × 50 =
  5. 5.15 × 5 =
  6. 6.73 × 5 =
  7. 7.42 × 5 =
  8. 8.63 × 5 =
  9. 9.32 × 5 =
  10. 10.73 × 5 =
  11. 11.59 × 50 =
  12. 12.16 × 5 =
  13. 13.95 × 50 =
  14. 14.33 × 50 =
  15. 15.24 × 50 =
  16. 16.70 × 5 =
  17. 17.76 × 5 =
  18. 18.59 × 5 =
  19. 19.49 × 5 =
  20. 20.58 × 5 =
  21. 21.75 × 5 =
  22. 22.68 × 5 =
  23. 23.95 × 5 =
  24. 24.44 × 50 =
  25. 25.29 × 50 =
  26. 26.86 × 5 =
  27. 27.43 × 5 =
  28. 28.81 × 50 =
  29. 29.21 × 5 =
  30. 30.85 × 50 =
  31. 31.66 × 5 =
  32. 32.37 × 50 =
  33. 33.69 × 50 =
  34. 34.85 × 50 =
  35. 35.82 × 5 =
  36. 36.91 × 50 =
  37. 37.84 × 50 =
  38. 38.26 × 5 =
  39. 39.79 × 5 =
  40. 40.57 × 5 =

Answer key

  1. 90
  2. 3650
  3. 3750
  4. 2050
  5. 75
  6. 365
  7. 210
  8. 315
  9. 160
  10. 365
  11. 2950
  12. 80
  13. 4750
  14. 1650
  15. 1200
  16. 350
  17. 380
  18. 295
  19. 245
  20. 290
  21. 375
  22. 340
  23. 475
  24. 2200
  25. 1450
  26. 430
  27. 215
  28. 4050
  29. 105
  30. 4250
  31. 330
  32. 1850
  33. 3450
  34. 4250
  35. 410
  36. 4550
  37. 4200
  38. 130
  39. 395
  40. 285

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