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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 548 · 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. 2.39 × 50 =
  3. 3.36 × 5 =
  4. 4.52 × 50 =
  5. 5.65 × 50 =
  6. 6.98 × 50 =
  7. 7.28 × 50 =
  8. 8.25 × 50 =
  9. 9.29 × 50 =
  10. 10.61 × 5 =
  11. 11.87 × 50 =
  12. 12.50 × 5 =
  13. 13.26 × 5 =
  14. 14.63 × 50 =
  15. 15.59 × 50 =
  16. 16.20 × 50 =
  17. 17.64 × 50 =
  18. 18.84 × 5 =
  19. 19.76 × 50 =
  20. 20.50 × 50 =
  21. 21.90 × 5 =
  22. 22.42 × 50 =
  23. 23.34 × 5 =
  24. 24.33 × 5 =
  25. 25.19 × 50 =
  26. 26.28 × 50 =
  27. 27.67 × 5 =
  28. 28.35 × 5 =
  29. 29.15 × 50 =
  30. 30.68 × 50 =
  31. 31.73 × 5 =
  32. 32.84 × 50 =
  33. 33.54 × 5 =
  34. 34.79 × 50 =
  35. 35.66 × 50 =
  36. 36.90 × 50 =
  37. 37.49 × 5 =
  38. 38.14 × 50 =
  39. 39.38 × 50 =
  40. 40.14 × 5 =

Answer key

  1. 105
  2. 1950
  3. 180
  4. 2600
  5. 3250
  6. 4900
  7. 1400
  8. 1250
  9. 1450
  10. 305
  11. 4350
  12. 250
  13. 130
  14. 3150
  15. 2950
  16. 1000
  17. 3200
  18. 420
  19. 3800
  20. 2500
  21. 450
  22. 2100
  23. 170
  24. 165
  25. 950
  26. 1400
  27. 335
  28. 175
  29. 750
  30. 3400
  31. 365
  32. 4200
  33. 270
  34. 3950
  35. 3300
  36. 4500
  37. 245
  38. 700
  39. 1900
  40. 70

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