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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 974 · 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. 1.55 × 5 =
  2. 2.21 × 50 =
  3. 3.12 × 5 =
  4. 4.52 × 5 =
  5. 5.75 × 50 =
  6. 6.37 × 5 =
  7. 7.61 × 5 =
  8. 8.63 × 50 =
  9. 9.23 × 5 =
  10. 10.24 × 50 =
  11. 11.67 × 50 =
  12. 12.35 × 5 =
  13. 13.27 × 50 =
  14. 14.50 × 50 =
  15. 15.63 × 50 =
  16. 16.65 × 50 =
  17. 17.74 × 50 =
  18. 18.20 × 50 =
  19. 19.80 × 5 =
  20. 20.23 × 5 =
  21. 21.46 × 5 =
  22. 22.19 × 50 =
  23. 23.37 × 50 =
  24. 24.86 × 50 =
  25. 25.96 × 5 =
  26. 26.34 × 5 =
  27. 27.22 × 5 =
  28. 28.82 × 50 =
  29. 29.27 × 5 =
  30. 30.87 × 50 =
  31. 31.12 × 50 =
  32. 32.52 × 5 =
  33. 33.63 × 50 =
  34. 34.61 × 5 =
  35. 35.70 × 50 =
  36. 36.95 × 50 =
  37. 37.29 × 50 =
  38. 38.56 × 50 =
  39. 39.57 × 50 =
  40. 40.46 × 5 =

Answer key

  1. 275
  2. 1050
  3. 60
  4. 260
  5. 3750
  6. 185
  7. 305
  8. 3150
  9. 115
  10. 1200
  11. 3350
  12. 175
  13. 1350
  14. 2500
  15. 3150
  16. 3250
  17. 3700
  18. 1000
  19. 400
  20. 115
  21. 230
  22. 950
  23. 1850
  24. 4300
  25. 480
  26. 170
  27. 110
  28. 4100
  29. 135
  30. 4350
  31. 600
  32. 260
  33. 3150
  34. 305
  35. 3500
  36. 4750
  37. 1450
  38. 2800
  39. 2850
  40. 230

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