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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 950 · 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. 1.94 × 5 =
  2. 2.22 × 50 =
  3. 3.32 × 5 =
  4. 4.80 × 50 =
  5. 5.15 × 5 =
  6. 6.84 × 5 =
  7. 7.54 × 5 =
  8. 8.32 × 50 =
  9. 9.84 × 5 =
  10. 10.34 × 5 =
  11. 11.98 × 5 =
  12. 12.64 × 5 =
  13. 13.50 × 5 =
  14. 14.31 × 50 =
  15. 15.14 × 50 =
  16. 16.82 × 5 =
  17. 17.52 × 50 =
  18. 18.32 × 5 =
  19. 19.94 × 5 =
  20. 20.36 × 5 =
  21. 21.56 × 5 =
  22. 22.34 × 5 =
  23. 23.41 × 5 =
  24. 24.36 × 5 =
  25. 25.97 × 50 =
  26. 26.45 × 5 =
  27. 27.41 × 5 =
  28. 28.19 × 50 =
  29. 29.52 × 50 =
  30. 30.24 × 50 =
  31. 31.26 × 50 =
  32. 32.23 × 50 =
  33. 33.59 × 5 =
  34. 34.92 × 5 =
  35. 35.44 × 50 =
  36. 36.74 × 5 =
  37. 37.87 × 50 =
  38. 38.23 × 5 =
  39. 39.46 × 50 =
  40. 40.95 × 50 =

Answer key

  1. 470
  2. 1100
  3. 160
  4. 4000
  5. 75
  6. 420
  7. 270
  8. 1600
  9. 420
  10. 170
  11. 490
  12. 320
  13. 250
  14. 1550
  15. 700
  16. 410
  17. 2600
  18. 160
  19. 470
  20. 180
  21. 280
  22. 170
  23. 205
  24. 180
  25. 4850
  26. 225
  27. 205
  28. 950
  29. 2600
  30. 1200
  31. 1300
  32. 1150
  33. 295
  34. 460
  35. 2200
  36. 370
  37. 4350
  38. 115
  39. 2300
  40. 4750

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