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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 222 · 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. 1.31 × 5 =
  2. 2.94 × 50 =
  3. 3.72 × 50 =
  4. 4.57 × 50 =
  5. 5.39 × 50 =
  6. 6.63 × 50 =
  7. 7.15 × 50 =
  8. 8.81 × 50 =
  9. 9.14 × 5 =
  10. 10.27 × 5 =
  11. 11.73 × 50 =
  12. 12.77 × 50 =
  13. 13.14 × 50 =
  14. 14.49 × 50 =
  15. 15.80 × 5 =
  16. 16.58 × 5 =
  17. 17.16 × 50 =
  18. 18.18 × 50 =
  19. 19.18 × 50 =
  20. 20.29 × 50 =
  21. 21.63 × 5 =
  22. 22.60 × 50 =
  23. 23.54 × 5 =
  24. 24.97 × 50 =
  25. 25.96 × 5 =
  26. 26.65 × 5 =
  27. 27.66 × 5 =
  28. 28.80 × 50 =
  29. 29.89 × 5 =
  30. 30.98 × 5 =
  31. 31.50 × 5 =
  32. 32.69 × 50 =
  33. 33.35 × 5 =
  34. 34.41 × 5 =
  35. 35.28 × 50 =
  36. 36.56 × 50 =
  37. 37.31 × 5 =
  38. 38.33 × 5 =
  39. 39.80 × 50 =
  40. 40.31 × 50 =

Answer key

  1. 155
  2. 4700
  3. 3600
  4. 2850
  5. 1950
  6. 3150
  7. 750
  8. 4050
  9. 70
  10. 135
  11. 3650
  12. 3850
  13. 700
  14. 2450
  15. 400
  16. 290
  17. 800
  18. 900
  19. 900
  20. 1450
  21. 315
  22. 3000
  23. 270
  24. 4850
  25. 480
  26. 325
  27. 330
  28. 4000
  29. 445
  30. 490
  31. 250
  32. 3450
  33. 175
  34. 205
  35. 1400
  36. 2800
  37. 155
  38. 165
  39. 4000
  40. 1550

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