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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 178 · 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 × 50 =
  2. 2.46 × 5 =
  3. 3.45 × 50 =
  4. 4.63 × 5 =
  5. 5.66 × 5 =
  6. 6.54 × 5 =
  7. 7.92 × 5 =
  8. 8.46 × 5 =
  9. 9.32 × 50 =
  10. 10.70 × 5 =
  11. 11.45 × 50 =
  12. 12.65 × 50 =
  13. 13.19 × 5 =
  14. 14.25 × 50 =
  15. 15.68 × 50 =
  16. 16.45 × 5 =
  17. 17.94 × 5 =
  18. 18.64 × 50 =
  19. 19.57 × 5 =
  20. 20.16 × 5 =
  21. 21.14 × 5 =
  22. 22.46 × 50 =
  23. 23.73 × 5 =
  24. 24.86 × 50 =
  25. 25.63 × 5 =
  26. 26.32 × 5 =
  27. 27.56 × 5 =
  28. 28.92 × 50 =
  29. 29.25 × 50 =
  30. 30.68 × 50 =
  31. 31.13 × 5 =
  32. 32.56 × 5 =
  33. 33.32 × 5 =
  34. 34.32 × 50 =
  35. 35.74 × 50 =
  36. 36.26 × 5 =
  37. 37.32 × 5 =
  38. 38.52 × 5 =
  39. 39.88 × 50 =
  40. 40.65 × 5 =

Answer key

  1. 900
  2. 230
  3. 2250
  4. 315
  5. 330
  6. 270
  7. 460
  8. 230
  9. 1600
  10. 350
  11. 2250
  12. 3250
  13. 95
  14. 1250
  15. 3400
  16. 225
  17. 470
  18. 3200
  19. 285
  20. 80
  21. 70
  22. 2300
  23. 365
  24. 4300
  25. 315
  26. 160
  27. 280
  28. 4600
  29. 1250
  30. 3400
  31. 65
  32. 280
  33. 160
  34. 1600
  35. 3700
  36. 130
  37. 160
  38. 260
  39. 4400
  40. 325

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