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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 336 · 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. 1.23 × 5 =
  2. 2.19 × 50 =
  3. 3.51 × 5 =
  4. 4.13 × 5 =
  5. 5.55 × 50 =
  6. 6.34 × 5 =
  7. 7.13 × 50 =
  8. 8.69 × 5 =
  9. 9.68 × 50 =
  10. 10.98 × 5 =
  11. 11.51 × 50 =
  12. 12.88 × 5 =
  13. 13.18 × 50 =
  14. 14.73 × 5 =
  15. 15.34 × 50 =
  16. 16.94 × 5 =
  17. 17.33 × 5 =
  18. 18.65 × 50 =
  19. 19.51 × 5 =
  20. 20.66 × 5 =
  21. 21.36 × 5 =
  22. 22.79 × 50 =
  23. 23.58 × 50 =
  24. 24.51 × 5 =
  25. 25.16 × 5 =
  26. 26.42 × 5 =
  27. 27.52 × 50 =
  28. 28.92 × 5 =
  29. 29.94 × 50 =
  30. 30.42 × 5 =
  31. 31.69 × 5 =
  32. 32.42 × 50 =
  33. 33.17 × 50 =
  34. 34.26 × 5 =
  35. 35.61 × 50 =
  36. 36.70 × 5 =
  37. 37.33 × 50 =
  38. 38.95 × 50 =
  39. 39.49 × 5 =
  40. 40.53 × 5 =

Answer key

  1. 115
  2. 950
  3. 255
  4. 65
  5. 2750
  6. 170
  7. 650
  8. 345
  9. 3400
  10. 490
  11. 2550
  12. 440
  13. 900
  14. 365
  15. 1700
  16. 470
  17. 165
  18. 3250
  19. 255
  20. 330
  21. 180
  22. 3950
  23. 2900
  24. 255
  25. 80
  26. 210
  27. 2600
  28. 460
  29. 4700
  30. 210
  31. 345
  32. 2100
  33. 850
  34. 130
  35. 3050
  36. 350
  37. 1650
  38. 4750
  39. 245
  40. 265

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