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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 156 · 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. 1.61 × 5 =
  2. 2.45 × 5 =
  3. 3.74 × 50 =
  4. 4.43 × 50 =
  5. 5.38 × 5 =
  6. 6.64 × 50 =
  7. 7.23 × 50 =
  8. 8.80 × 50 =
  9. 9.28 × 5 =
  10. 10.92 × 5 =
  11. 11.51 × 5 =
  12. 12.52 × 5 =
  13. 13.95 × 5 =
  14. 14.14 × 5 =
  15. 15.39 × 50 =
  16. 16.47 × 50 =
  17. 17.41 × 50 =
  18. 18.83 × 50 =
  19. 19.78 × 50 =
  20. 20.44 × 5 =
  21. 21.85 × 50 =
  22. 22.60 × 5 =
  23. 23.53 × 50 =
  24. 24.91 × 50 =
  25. 25.12 × 5 =
  26. 26.96 × 50 =
  27. 27.16 × 50 =
  28. 28.79 × 5 =
  29. 29.91 × 5 =
  30. 30.45 × 5 =
  31. 31.25 × 5 =
  32. 32.26 × 50 =
  33. 33.27 × 50 =
  34. 34.27 × 5 =
  35. 35.64 × 50 =
  36. 36.63 × 5 =
  37. 37.91 × 50 =
  38. 38.92 × 50 =
  39. 39.87 × 50 =
  40. 40.17 × 5 =

Answer key

  1. 305
  2. 225
  3. 3700
  4. 2150
  5. 190
  6. 3200
  7. 1150
  8. 4000
  9. 140
  10. 460
  11. 255
  12. 260
  13. 475
  14. 70
  15. 1950
  16. 2350
  17. 2050
  18. 4150
  19. 3900
  20. 220
  21. 4250
  22. 300
  23. 2650
  24. 4550
  25. 60
  26. 4800
  27. 800
  28. 395
  29. 455
  30. 225
  31. 125
  32. 1300
  33. 1350
  34. 135
  35. 3200
  36. 315
  37. 4550
  38. 4600
  39. 4350
  40. 85

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