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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 687 · 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. 1.21 × 5 =
  2. 2.35 × 5 =
  3. 3.26 × 5 =
  4. 4.70 × 50 =
  5. 5.92 × 50 =
  6. 6.12 × 5 =
  7. 7.91 × 5 =
  8. 8.15 × 5 =
  9. 9.21 × 50 =
  10. 10.91 × 5 =
  11. 11.46 × 50 =
  12. 12.98 × 50 =
  13. 13.57 × 5 =
  14. 14.96 × 50 =
  15. 15.94 × 50 =
  16. 16.76 × 50 =
  17. 17.24 × 50 =
  18. 18.30 × 50 =
  19. 19.69 × 50 =
  20. 20.29 × 5 =
  21. 21.30 × 50 =
  22. 22.45 × 50 =
  23. 23.65 × 50 =
  24. 24.31 × 5 =
  25. 25.61 × 5 =
  26. 26.54 × 50 =
  27. 27.58 × 50 =
  28. 28.74 × 50 =
  29. 29.49 × 5 =
  30. 30.44 × 50 =
  31. 31.62 × 5 =
  32. 32.49 × 50 =
  33. 33.30 × 50 =
  34. 34.43 × 50 =
  35. 35.75 × 50 =
  36. 36.88 × 50 =
  37. 37.69 × 50 =
  38. 38.55 × 50 =
  39. 39.60 × 5 =
  40. 40.92 × 50 =

Answer key

  1. 105
  2. 175
  3. 130
  4. 3500
  5. 4600
  6. 60
  7. 455
  8. 75
  9. 1050
  10. 455
  11. 2300
  12. 4900
  13. 285
  14. 4800
  15. 4700
  16. 3800
  17. 1200
  18. 1500
  19. 3450
  20. 145
  21. 1500
  22. 2250
  23. 3250
  24. 155
  25. 305
  26. 2700
  27. 2900
  28. 3700
  29. 245
  30. 2200
  31. 310
  32. 2450
  33. 1500
  34. 2150
  35. 3750
  36. 4400
  37. 3450
  38. 2750
  39. 300
  40. 4600

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