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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 386 · 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. 1.73 × 5 =
  2. 2.20 × 50 =
  3. 3.96 × 5 =
  4. 4.76 × 50 =
  5. 5.29 × 50 =
  6. 6.17 × 5 =
  7. 7.28 × 5 =
  8. 8.42 × 5 =
  9. 9.55 × 50 =
  10. 10.79 × 5 =
  11. 11.79 × 5 =
  12. 12.33 × 5 =
  13. 13.89 × 5 =
  14. 14.12 × 50 =
  15. 15.27 × 5 =
  16. 16.68 × 5 =
  17. 17.87 × 5 =
  18. 18.25 × 50 =
  19. 19.49 × 5 =
  20. 20.85 × 5 =
  21. 21.51 × 50 =
  22. 22.64 × 50 =
  23. 23.95 × 50 =
  24. 24.72 × 5 =
  25. 25.57 × 50 =
  26. 26.79 × 5 =
  27. 27.21 × 50 =
  28. 28.51 × 50 =
  29. 29.86 × 50 =
  30. 30.28 × 50 =
  31. 31.75 × 5 =
  32. 32.49 × 5 =
  33. 33.52 × 5 =
  34. 34.68 × 5 =
  35. 35.69 × 5 =
  36. 36.24 × 50 =
  37. 37.32 × 50 =
  38. 38.80 × 50 =
  39. 39.25 × 50 =
  40. 40.42 × 5 =

Answer key

  1. 365
  2. 1000
  3. 480
  4. 3800
  5. 1450
  6. 85
  7. 140
  8. 210
  9. 2750
  10. 395
  11. 395
  12. 165
  13. 445
  14. 600
  15. 135
  16. 340
  17. 435
  18. 1250
  19. 245
  20. 425
  21. 2550
  22. 3200
  23. 4750
  24. 360
  25. 2850
  26. 395
  27. 1050
  28. 2550
  29. 4300
  30. 1400
  31. 375
  32. 245
  33. 260
  34. 340
  35. 345
  36. 1200
  37. 1600
  38. 4000
  39. 1250
  40. 210

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