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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 763 · 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. 1.27 × 5 =
  2. 2.13 × 5 =
  3. 3.87 × 5 =
  4. 4.90 × 50 =
  5. 5.80 × 5 =
  6. 6.75 × 5 =
  7. 7.14 × 50 =
  8. 8.75 × 5 =
  9. 9.39 × 5 =
  10. 10.89 × 5 =
  11. 11.21 × 5 =
  12. 12.47 × 5 =
  13. 13.13 × 5 =
  14. 14.88 × 50 =
  15. 15.20 × 5 =
  16. 16.18 × 50 =
  17. 17.37 × 5 =
  18. 18.91 × 50 =
  19. 19.58 × 5 =
  20. 20.12 × 50 =
  21. 21.20 × 5 =
  22. 22.67 × 50 =
  23. 23.77 × 5 =
  24. 24.86 × 50 =
  25. 25.64 × 5 =
  26. 26.58 × 50 =
  27. 27.57 × 50 =
  28. 28.63 × 50 =
  29. 29.97 × 50 =
  30. 30.53 × 5 =
  31. 31.26 × 50 =
  32. 32.97 × 5 =
  33. 33.63 × 5 =
  34. 34.71 × 5 =
  35. 35.23 × 5 =
  36. 36.35 × 50 =
  37. 37.26 × 50 =
  38. 38.32 × 50 =
  39. 39.82 × 5 =
  40. 40.29 × 50 =

Answer key

  1. 135
  2. 65
  3. 435
  4. 4500
  5. 400
  6. 375
  7. 700
  8. 375
  9. 195
  10. 445
  11. 105
  12. 235
  13. 65
  14. 4400
  15. 100
  16. 900
  17. 185
  18. 4550
  19. 290
  20. 600
  21. 100
  22. 3350
  23. 385
  24. 4300
  25. 320
  26. 2900
  27. 2850
  28. 3150
  29. 4850
  30. 265
  31. 1300
  32. 485
  33. 315
  34. 355
  35. 115
  36. 1750
  37. 1300
  38. 1600
  39. 410
  40. 1450

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