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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 633 · 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. 1.44 × 50 =
  2. 2.70 × 5 =
  3. 3.91 × 5 =
  4. 4.45 × 5 =
  5. 5.26 × 5 =
  6. 6.39 × 5 =
  7. 7.69 × 50 =
  8. 8.16 × 50 =
  9. 9.50 × 5 =
  10. 10.88 × 50 =
  11. 11.42 × 5 =
  12. 12.34 × 50 =
  13. 13.39 × 5 =
  14. 14.32 × 50 =
  15. 15.89 × 50 =
  16. 16.29 × 50 =
  17. 17.47 × 5 =
  18. 18.47 × 50 =
  19. 19.91 × 5 =
  20. 20.93 × 50 =
  21. 21.86 × 50 =
  22. 22.58 × 50 =
  23. 23.24 × 5 =
  24. 24.81 × 50 =
  25. 25.86 × 5 =
  26. 26.77 × 5 =
  27. 27.90 × 5 =
  28. 28.19 × 50 =
  29. 29.96 × 5 =
  30. 30.80 × 5 =
  31. 31.80 × 50 =
  32. 32.37 × 50 =
  33. 33.18 × 50 =
  34. 34.68 × 5 =
  35. 35.79 × 50 =
  36. 36.56 × 5 =
  37. 37.63 × 50 =
  38. 38.50 × 5 =
  39. 39.31 × 50 =
  40. 40.23 × 50 =

Answer key

  1. 2200
  2. 350
  3. 455
  4. 225
  5. 130
  6. 195
  7. 3450
  8. 800
  9. 250
  10. 4400
  11. 210
  12. 1700
  13. 195
  14. 1600
  15. 4450
  16. 1450
  17. 235
  18. 2350
  19. 455
  20. 4650
  21. 4300
  22. 2900
  23. 120
  24. 4050
  25. 430
  26. 385
  27. 450
  28. 950
  29. 480
  30. 400
  31. 4000
  32. 1850
  33. 900
  34. 340
  35. 3950
  36. 280
  37. 3150
  38. 250
  39. 1550
  40. 1150

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