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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 572 · 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. 1.87 × 5 =
  2. 2.54 × 5 =
  3. 3.96 × 5 =
  4. 4.93 × 50 =
  5. 5.60 × 5 =
  6. 6.43 × 50 =
  7. 7.87 × 50 =
  8. 8.44 × 5 =
  9. 9.68 × 50 =
  10. 10.64 × 50 =
  11. 11.84 × 5 =
  12. 12.71 × 50 =
  13. 13.65 × 50 =
  14. 14.13 × 50 =
  15. 15.94 × 5 =
  16. 16.73 × 5 =
  17. 17.40 × 50 =
  18. 18.20 × 50 =
  19. 19.37 × 5 =
  20. 20.75 × 50 =
  21. 21.34 × 50 =
  22. 22.56 × 50 =
  23. 23.61 × 5 =
  24. 24.40 × 5 =
  25. 25.81 × 5 =
  26. 26.98 × 5 =
  27. 27.95 × 50 =
  28. 28.81 × 5 =
  29. 29.29 × 5 =
  30. 30.55 × 50 =
  31. 31.31 × 50 =
  32. 32.95 × 5 =
  33. 33.25 × 5 =
  34. 34.92 × 5 =
  35. 35.18 × 5 =
  36. 36.79 × 5 =
  37. 37.60 × 5 =
  38. 38.55 × 50 =
  39. 39.31 × 50 =
  40. 40.86 × 5 =

Answer key

  1. 435
  2. 270
  3. 480
  4. 4650
  5. 300
  6. 2150
  7. 4350
  8. 220
  9. 3400
  10. 3200
  11. 420
  12. 3550
  13. 3250
  14. 650
  15. 470
  16. 365
  17. 2000
  18. 1000
  19. 185
  20. 3750
  21. 1700
  22. 2800
  23. 305
  24. 200
  25. 405
  26. 490
  27. 4750
  28. 405
  29. 145
  30. 2750
  31. 1550
  32. 475
  33. 125
  34. 460
  35. 90
  36. 395
  37. 300
  38. 2750
  39. 1550
  40. 430

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