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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 492 · 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. 1.40 × 50 =
  2. 2.76 × 50 =
  3. 3.19 × 5 =
  4. 4.45 × 5 =
  5. 5.87 × 5 =
  6. 6.66 × 50 =
  7. 7.48 × 5 =
  8. 8.58 × 50 =
  9. 9.66 × 5 =
  10. 10.39 × 5 =
  11. 11.21 × 5 =
  12. 12.19 × 5 =
  13. 13.44 × 50 =
  14. 14.86 × 5 =
  15. 15.38 × 5 =
  16. 16.72 × 5 =
  17. 17.58 × 50 =
  18. 18.91 × 50 =
  19. 19.26 × 5 =
  20. 20.47 × 50 =
  21. 21.98 × 5 =
  22. 22.26 × 5 =
  23. 23.91 × 5 =
  24. 24.91 × 5 =
  25. 25.46 × 50 =
  26. 26.95 × 5 =
  27. 27.39 × 5 =
  28. 28.84 × 5 =
  29. 29.24 × 50 =
  30. 30.23 × 5 =
  31. 31.75 × 50 =
  32. 32.65 × 5 =
  33. 33.60 × 50 =
  34. 34.31 × 50 =
  35. 35.68 × 50 =
  36. 36.40 × 5 =
  37. 37.54 × 50 =
  38. 38.37 × 5 =
  39. 39.97 × 50 =
  40. 40.34 × 5 =

Answer key

  1. 2000
  2. 3800
  3. 95
  4. 225
  5. 435
  6. 3300
  7. 240
  8. 2900
  9. 330
  10. 195
  11. 105
  12. 95
  13. 2200
  14. 430
  15. 190
  16. 360
  17. 2900
  18. 4550
  19. 130
  20. 2350
  21. 490
  22. 130
  23. 455
  24. 455
  25. 2300
  26. 475
  27. 195
  28. 420
  29. 1200
  30. 115
  31. 3750
  32. 325
  33. 3000
  34. 1550
  35. 3400
  36. 200
  37. 2700
  38. 185
  39. 4850
  40. 170

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