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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 972 · 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. 1.93 × 50 =
  2. 2.50 × 50 =
  3. 3.68 × 5 =
  4. 4.92 × 50 =
  5. 5.43 × 5 =
  6. 6.80 × 5 =
  7. 7.64 × 50 =
  8. 8.75 × 50 =
  9. 9.69 × 50 =
  10. 10.15 × 5 =
  11. 11.31 × 5 =
  12. 12.26 × 50 =
  13. 13.13 × 50 =
  14. 14.16 × 50 =
  15. 15.53 × 5 =
  16. 16.87 × 50 =
  17. 17.52 × 5 =
  18. 18.35 × 50 =
  19. 19.95 × 5 =
  20. 20.80 × 50 =
  21. 21.72 × 50 =
  22. 22.21 × 50 =
  23. 23.30 × 5 =
  24. 24.94 × 5 =
  25. 25.82 × 5 =
  26. 26.25 × 50 =
  27. 27.95 × 5 =
  28. 28.91 × 50 =
  29. 29.80 × 5 =
  30. 30.62 × 5 =
  31. 31.83 × 5 =
  32. 32.41 × 5 =
  33. 33.67 × 5 =
  34. 34.15 × 5 =
  35. 35.63 × 5 =
  36. 36.16 × 5 =
  37. 37.68 × 5 =
  38. 38.95 × 5 =
  39. 39.57 × 50 =
  40. 40.31 × 50 =

Answer key

  1. 4650
  2. 2500
  3. 340
  4. 4600
  5. 215
  6. 400
  7. 3200
  8. 3750
  9. 3450
  10. 75
  11. 155
  12. 1300
  13. 650
  14. 800
  15. 265
  16. 4350
  17. 260
  18. 1750
  19. 475
  20. 4000
  21. 3600
  22. 1050
  23. 150
  24. 470
  25. 410
  26. 1250
  27. 475
  28. 4550
  29. 400
  30. 310
  31. 415
  32. 205
  33. 335
  34. 75
  35. 315
  36. 80
  37. 340
  38. 475
  39. 2850
  40. 1550

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