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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 971 · 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. 1.80 × 50 =
  2. 2.93 × 50 =
  3. 3.34 × 5 =
  4. 4.75 × 50 =
  5. 5.94 × 50 =
  6. 6.15 × 5 =
  7. 7.46 × 5 =
  8. 8.25 × 50 =
  9. 9.30 × 50 =
  10. 10.19 × 50 =
  11. 11.74 × 5 =
  12. 12.30 × 5 =
  13. 13.33 × 5 =
  14. 14.12 × 50 =
  15. 15.77 × 5 =
  16. 16.52 × 5 =
  17. 17.62 × 50 =
  18. 18.71 × 50 =
  19. 19.77 × 5 =
  20. 20.47 × 50 =
  21. 21.20 × 5 =
  22. 22.37 × 50 =
  23. 23.90 × 5 =
  24. 24.46 × 5 =
  25. 25.31 × 50 =
  26. 26.17 × 50 =
  27. 27.44 × 5 =
  28. 28.35 × 50 =
  29. 29.13 × 5 =
  30. 30.52 × 5 =
  31. 31.22 × 5 =
  32. 32.48 × 50 =
  33. 33.67 × 5 =
  34. 34.26 × 5 =
  35. 35.85 × 5 =
  36. 36.61 × 50 =
  37. 37.35 × 5 =
  38. 38.15 × 5 =
  39. 39.49 × 50 =
  40. 40.95 × 50 =

Answer key

  1. 4000
  2. 4650
  3. 170
  4. 3750
  5. 4700
  6. 75
  7. 230
  8. 1250
  9. 1500
  10. 950
  11. 370
  12. 150
  13. 165
  14. 600
  15. 385
  16. 260
  17. 3100
  18. 3550
  19. 385
  20. 2350
  21. 100
  22. 1850
  23. 450
  24. 230
  25. 1550
  26. 850
  27. 220
  28. 1750
  29. 65
  30. 260
  31. 110
  32. 2400
  33. 335
  34. 130
  35. 425
  36. 3050
  37. 175
  38. 75
  39. 2450
  40. 4750

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