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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 988 · 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. 1.67 × 5 =
  2. 2.56 × 50 =
  3. 3.13 × 5 =
  4. 4.84 × 50 =
  5. 5.25 × 50 =
  6. 6.62 × 50 =
  7. 7.45 × 5 =
  8. 8.13 × 5 =
  9. 9.74 × 5 =
  10. 10.75 × 50 =
  11. 11.20 × 5 =
  12. 12.85 × 5 =
  13. 13.40 × 50 =
  14. 14.75 × 50 =
  15. 15.98 × 5 =
  16. 16.62 × 50 =
  17. 17.69 × 50 =
  18. 18.13 × 5 =
  19. 19.24 × 5 =
  20. 20.14 × 50 =
  21. 21.34 × 5 =
  22. 22.51 × 5 =
  23. 23.55 × 5 =
  24. 24.17 × 50 =
  25. 25.30 × 50 =
  26. 26.66 × 5 =
  27. 27.22 × 50 =
  28. 28.19 × 50 =
  29. 29.68 × 5 =
  30. 30.90 × 50 =
  31. 31.49 × 50 =
  32. 32.27 × 5 =
  33. 33.45 × 5 =
  34. 34.78 × 5 =
  35. 35.37 × 50 =
  36. 36.36 × 5 =
  37. 37.14 × 5 =
  38. 38.30 × 5 =
  39. 39.52 × 50 =
  40. 40.27 × 5 =

Answer key

  1. 335
  2. 2800
  3. 65
  4. 4200
  5. 1250
  6. 3100
  7. 225
  8. 65
  9. 370
  10. 3750
  11. 100
  12. 425
  13. 2000
  14. 3750
  15. 490
  16. 3100
  17. 3450
  18. 65
  19. 120
  20. 700
  21. 170
  22. 255
  23. 275
  24. 850
  25. 1500
  26. 330
  27. 1100
  28. 950
  29. 340
  30. 4500
  31. 2450
  32. 135
  33. 225
  34. 390
  35. 1850
  36. 180
  37. 70
  38. 150
  39. 2600
  40. 135

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