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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 903 · 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. 1.56 × 5 =
  2. 2.32 × 50 =
  3. 3.30 × 50 =
  4. 4.92 × 5 =
  5. 5.87 × 50 =
  6. 6.32 × 50 =
  7. 7.49 × 50 =
  8. 8.95 × 5 =
  9. 9.34 × 5 =
  10. 10.44 × 50 =
  11. 11.75 × 5 =
  12. 12.63 × 50 =
  13. 13.16 × 50 =
  14. 14.96 × 50 =
  15. 15.50 × 50 =
  16. 16.27 × 50 =
  17. 17.36 × 50 =
  18. 18.70 × 50 =
  19. 19.89 × 50 =
  20. 20.62 × 5 =
  21. 21.82 × 50 =
  22. 22.66 × 5 =
  23. 23.54 × 50 =
  24. 24.86 × 5 =
  25. 25.49 × 5 =
  26. 26.71 × 5 =
  27. 27.89 × 50 =
  28. 28.91 × 50 =
  29. 29.44 × 5 =
  30. 30.61 × 50 =
  31. 31.58 × 50 =
  32. 32.29 × 50 =
  33. 33.53 × 50 =
  34. 34.84 × 5 =
  35. 35.51 × 50 =
  36. 36.30 × 50 =
  37. 37.69 × 5 =
  38. 38.40 × 50 =
  39. 39.53 × 5 =
  40. 40.68 × 5 =

Answer key

  1. 280
  2. 1600
  3. 1500
  4. 460
  5. 4350
  6. 1600
  7. 2450
  8. 475
  9. 170
  10. 2200
  11. 375
  12. 3150
  13. 800
  14. 4800
  15. 2500
  16. 1350
  17. 1800
  18. 3500
  19. 4450
  20. 310
  21. 4100
  22. 330
  23. 2700
  24. 430
  25. 245
  26. 355
  27. 4450
  28. 4550
  29. 220
  30. 3050
  31. 2900
  32. 1450
  33. 2650
  34. 420
  35. 2550
  36. 1500
  37. 345
  38. 2000
  39. 265
  40. 340

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