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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 607 · 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. 1.26 × 5 =
  2. 2.74 × 50 =
  3. 3.13 × 5 =
  4. 4.62 × 50 =
  5. 5.59 × 50 =
  6. 6.60 × 50 =
  7. 7.40 × 50 =
  8. 8.20 × 50 =
  9. 9.24 × 5 =
  10. 10.12 × 5 =
  11. 11.41 × 5 =
  12. 12.58 × 50 =
  13. 13.73 × 50 =
  14. 14.34 × 5 =
  15. 15.25 × 50 =
  16. 16.39 × 50 =
  17. 17.59 × 50 =
  18. 18.87 × 5 =
  19. 19.12 × 50 =
  20. 20.82 × 5 =
  21. 21.26 × 50 =
  22. 22.25 × 5 =
  23. 23.92 × 50 =
  24. 24.55 × 50 =
  25. 25.36 × 5 =
  26. 26.49 × 5 =
  27. 27.84 × 5 =
  28. 28.25 × 5 =
  29. 29.86 × 5 =
  30. 30.34 × 50 =
  31. 31.47 × 50 =
  32. 32.77 × 5 =
  33. 33.56 × 50 =
  34. 34.92 × 50 =
  35. 35.19 × 5 =
  36. 36.62 × 5 =
  37. 37.34 × 50 =
  38. 38.19 × 50 =
  39. 39.14 × 50 =
  40. 40.19 × 50 =

Answer key

  1. 130
  2. 3700
  3. 65
  4. 3100
  5. 2950
  6. 3000
  7. 2000
  8. 1000
  9. 120
  10. 60
  11. 205
  12. 2900
  13. 3650
  14. 170
  15. 1250
  16. 1950
  17. 2950
  18. 435
  19. 600
  20. 410
  21. 1300
  22. 125
  23. 4600
  24. 2750
  25. 180
  26. 245
  27. 420
  28. 125
  29. 430
  30. 1700
  31. 2350
  32. 385
  33. 2800
  34. 4600
  35. 95
  36. 310
  37. 1700
  38. 950
  39. 700
  40. 950

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