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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 766 · 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. 1.47 × 50 =
  2. 2.40 × 50 =
  3. 3.77 × 5 =
  4. 4.67 × 50 =
  5. 5.51 × 5 =
  6. 6.43 × 50 =
  7. 7.92 × 50 =
  8. 8.42 × 50 =
  9. 9.21 × 50 =
  10. 10.67 × 5 =
  11. 11.91 × 5 =
  12. 12.76 × 50 =
  13. 13.57 × 5 =
  14. 14.90 × 5 =
  15. 15.65 × 50 =
  16. 16.20 × 50 =
  17. 17.53 × 50 =
  18. 18.98 × 5 =
  19. 19.19 × 50 =
  20. 20.67 × 5 =
  21. 21.62 × 50 =
  22. 22.96 × 50 =
  23. 23.57 × 5 =
  24. 24.90 × 50 =
  25. 25.68 × 5 =
  26. 26.18 × 5 =
  27. 27.47 × 5 =
  28. 28.22 × 5 =
  29. 29.71 × 5 =
  30. 30.71 × 50 =
  31. 31.93 × 5 =
  32. 32.57 × 50 =
  33. 33.26 × 5 =
  34. 34.93 × 5 =
  35. 35.22 × 50 =
  36. 36.35 × 5 =
  37. 37.87 × 5 =
  38. 38.53 × 50 =
  39. 39.95 × 5 =
  40. 40.22 × 50 =

Answer key

  1. 2350
  2. 2000
  3. 385
  4. 3350
  5. 255
  6. 2150
  7. 4600
  8. 2100
  9. 1050
  10. 335
  11. 455
  12. 3800
  13. 285
  14. 450
  15. 3250
  16. 1000
  17. 2650
  18. 490
  19. 950
  20. 335
  21. 3100
  22. 4800
  23. 285
  24. 4500
  25. 340
  26. 90
  27. 235
  28. 110
  29. 355
  30. 3550
  31. 465
  32. 2850
  33. 130
  34. 465
  35. 1100
  36. 175
  37. 435
  38. 2650
  39. 475
  40. 1100

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