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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 912 · 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. 1.94 × 5 =
  2. 2.58 × 5 =
  3. 3.16 × 50 =
  4. 4.71 × 5 =
  5. 5.86 × 5 =
  6. 6.95 × 50 =
  7. 7.23 × 50 =
  8. 8.68 × 50 =
  9. 9.74 × 50 =
  10. 10.84 × 5 =
  11. 11.28 × 5 =
  12. 12.50 × 5 =
  13. 13.36 × 50 =
  14. 14.61 × 5 =
  15. 15.85 × 5 =
  16. 16.81 × 5 =
  17. 17.21 × 5 =
  18. 18.63 × 50 =
  19. 19.18 × 50 =
  20. 20.18 × 50 =
  21. 21.28 × 50 =
  22. 22.14 × 50 =
  23. 23.46 × 5 =
  24. 24.82 × 5 =
  25. 25.17 × 5 =
  26. 26.26 × 50 =
  27. 27.95 × 5 =
  28. 28.32 × 5 =
  29. 29.82 × 50 =
  30. 30.49 × 50 =
  31. 31.60 × 5 =
  32. 32.52 × 50 =
  33. 33.24 × 5 =
  34. 34.42 × 5 =
  35. 35.27 × 5 =
  36. 36.42 × 50 =
  37. 37.47 × 5 =
  38. 38.20 × 5 =
  39. 39.57 × 5 =
  40. 40.33 × 5 =

Answer key

  1. 470
  2. 290
  3. 800
  4. 355
  5. 430
  6. 4750
  7. 1150
  8. 3400
  9. 3700
  10. 420
  11. 140
  12. 250
  13. 1800
  14. 305
  15. 425
  16. 405
  17. 105
  18. 3150
  19. 900
  20. 900
  21. 1400
  22. 700
  23. 230
  24. 410
  25. 85
  26. 1300
  27. 475
  28. 160
  29. 4100
  30. 2450
  31. 300
  32. 2600
  33. 120
  34. 210
  35. 135
  36. 2100
  37. 235
  38. 100
  39. 285
  40. 165

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