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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 889 · 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. 1.19 × 5 =
  2. 2.39 × 5 =
  3. 3.12 × 5 =
  4. 4.32 × 5 =
  5. 5.61 × 50 =
  6. 6.88 × 5 =
  7. 7.69 × 5 =
  8. 8.24 × 5 =
  9. 9.89 × 5 =
  10. 10.22 × 5 =
  11. 11.38 × 5 =
  12. 12.47 × 5 =
  13. 13.63 × 5 =
  14. 14.35 × 5 =
  15. 15.68 × 50 =
  16. 16.98 × 5 =
  17. 17.21 × 5 =
  18. 18.55 × 5 =
  19. 19.15 × 5 =
  20. 20.67 × 5 =
  21. 21.44 × 50 =
  22. 22.85 × 50 =
  23. 23.22 × 50 =
  24. 24.87 × 50 =
  25. 25.25 × 50 =
  26. 26.20 × 50 =
  27. 27.69 × 50 =
  28. 28.84 × 50 =
  29. 29.88 × 5 =
  30. 30.71 × 50 =
  31. 31.60 × 5 =
  32. 32.87 × 5 =
  33. 33.77 × 50 =
  34. 34.37 × 50 =
  35. 35.32 × 5 =
  36. 36.15 × 5 =
  37. 37.96 × 50 =
  38. 38.19 × 50 =
  39. 39.60 × 50 =
  40. 40.16 × 50 =

Answer key

  1. 95
  2. 195
  3. 60
  4. 160
  5. 3050
  6. 440
  7. 345
  8. 120
  9. 445
  10. 110
  11. 190
  12. 235
  13. 315
  14. 175
  15. 3400
  16. 490
  17. 105
  18. 275
  19. 75
  20. 335
  21. 2200
  22. 4250
  23. 1100
  24. 4350
  25. 1250
  26. 1000
  27. 3450
  28. 4200
  29. 440
  30. 3550
  31. 300
  32. 435
  33. 3850
  34. 1850
  35. 160
  36. 75
  37. 4800
  38. 950
  39. 3000
  40. 800

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