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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 547 · 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. 1.20 × 5 =
  2. 2.17 × 50 =
  3. 3.46 × 5 =
  4. 4.22 × 50 =
  5. 5.22 × 5 =
  6. 6.98 × 5 =
  7. 7.36 × 50 =
  8. 8.82 × 50 =
  9. 9.67 × 50 =
  10. 10.92 × 50 =
  11. 11.17 × 5 =
  12. 12.13 × 50 =
  13. 13.52 × 5 =
  14. 14.61 × 5 =
  15. 15.35 × 50 =
  16. 16.12 × 50 =
  17. 17.53 × 5 =
  18. 18.25 × 5 =
  19. 19.23 × 5 =
  20. 20.80 × 50 =
  21. 21.91 × 50 =
  22. 22.24 × 50 =
  23. 23.93 × 50 =
  24. 24.14 × 5 =
  25. 25.58 × 5 =
  26. 26.39 × 50 =
  27. 27.34 × 50 =
  28. 28.84 × 50 =
  29. 29.79 × 5 =
  30. 30.59 × 5 =
  31. 31.18 × 5 =
  32. 32.75 × 50 =
  33. 33.98 × 5 =
  34. 34.47 × 5 =
  35. 35.45 × 50 =
  36. 36.41 × 50 =
  37. 37.28 × 5 =
  38. 38.96 × 5 =
  39. 39.69 × 50 =
  40. 40.39 × 50 =

Answer key

  1. 100
  2. 850
  3. 230
  4. 1100
  5. 110
  6. 490
  7. 1800
  8. 4100
  9. 3350
  10. 4600
  11. 85
  12. 650
  13. 260
  14. 305
  15. 1750
  16. 600
  17. 265
  18. 125
  19. 115
  20. 4000
  21. 4550
  22. 1200
  23. 4650
  24. 70
  25. 290
  26. 1950
  27. 1700
  28. 4200
  29. 395
  30. 295
  31. 90
  32. 3750
  33. 490
  34. 235
  35. 2250
  36. 2050
  37. 140
  38. 480
  39. 3450
  40. 1950

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