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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 423 · 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. 1.95 × 5 =
  2. 2.92 × 50 =
  3. 3.80 × 5 =
  4. 4.59 × 50 =
  5. 5.81 × 5 =
  6. 6.69 × 5 =
  7. 7.71 × 50 =
  8. 8.16 × 5 =
  9. 9.33 × 5 =
  10. 10.78 × 5 =
  11. 11.14 × 5 =
  12. 12.12 × 50 =
  13. 13.95 × 50 =
  14. 14.27 × 50 =
  15. 15.84 × 5 =
  16. 16.48 × 5 =
  17. 17.90 × 5 =
  18. 18.68 × 5 =
  19. 19.76 × 5 =
  20. 20.79 × 5 =
  21. 21.76 × 5 =
  22. 22.72 × 5 =
  23. 23.72 × 5 =
  24. 24.58 × 50 =
  25. 25.68 × 50 =
  26. 26.13 × 50 =
  27. 27.84 × 5 =
  28. 28.60 × 5 =
  29. 29.98 × 5 =
  30. 30.60 × 5 =
  31. 31.77 × 5 =
  32. 32.46 × 50 =
  33. 33.16 × 50 =
  34. 34.67 × 5 =
  35. 35.33 × 5 =
  36. 36.21 × 5 =
  37. 37.68 × 50 =
  38. 38.69 × 5 =
  39. 39.81 × 5 =
  40. 40.91 × 50 =

Answer key

  1. 475
  2. 4600
  3. 400
  4. 2950
  5. 405
  6. 345
  7. 3550
  8. 80
  9. 165
  10. 390
  11. 70
  12. 600
  13. 4750
  14. 1350
  15. 420
  16. 240
  17. 450
  18. 340
  19. 380
  20. 395
  21. 380
  22. 360
  23. 360
  24. 2900
  25. 3400
  26. 650
  27. 420
  28. 300
  29. 490
  30. 300
  31. 385
  32. 2300
  33. 800
  34. 335
  35. 165
  36. 105
  37. 3400
  38. 345
  39. 405
  40. 4550

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