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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 896 · 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. 1.87 × 5 =
  2. 2.40 × 50 =
  3. 3.98 × 50 =
  4. 4.81 × 50 =
  5. 5.40 × 5 =
  6. 6.58 × 5 =
  7. 7.24 × 5 =
  8. 8.27 × 50 =
  9. 9.78 × 5 =
  10. 10.80 × 5 =
  11. 11.16 × 50 =
  12. 12.27 × 5 =
  13. 13.27 × 50 =
  14. 14.81 × 5 =
  15. 15.91 × 50 =
  16. 16.47 × 50 =
  17. 17.34 × 5 =
  18. 18.24 × 5 =
  19. 19.68 × 50 =
  20. 20.19 × 5 =
  21. 21.28 × 5 =
  22. 22.12 × 5 =
  23. 23.57 × 5 =
  24. 24.55 × 50 =
  25. 25.74 × 50 =
  26. 26.53 × 5 =
  27. 27.41 × 5 =
  28. 28.28 × 50 =
  29. 29.23 × 5 =
  30. 30.90 × 5 =
  31. 31.29 × 50 =
  32. 32.90 × 5 =
  33. 33.30 × 50 =
  34. 34.39 × 5 =
  35. 35.73 × 5 =
  36. 36.37 × 5 =
  37. 37.85 × 5 =
  38. 38.80 × 5 =
  39. 39.82 × 5 =
  40. 40.14 × 5 =

Answer key

  1. 435
  2. 2000
  3. 4900
  4. 4050
  5. 200
  6. 290
  7. 120
  8. 1350
  9. 390
  10. 400
  11. 800
  12. 135
  13. 1350
  14. 405
  15. 4550
  16. 2350
  17. 170
  18. 120
  19. 3400
  20. 95
  21. 140
  22. 60
  23. 285
  24. 2750
  25. 3700
  26. 265
  27. 205
  28. 1400
  29. 115
  30. 450
  31. 1450
  32. 450
  33. 1500
  34. 195
  35. 365
  36. 185
  37. 425
  38. 400
  39. 410
  40. 70

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