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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 837 · 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. 1.32 × 5 =
  2. 2.73 × 5 =
  3. 3.76 × 5 =
  4. 4.28 × 50 =
  5. 5.90 × 5 =
  6. 6.91 × 5 =
  7. 7.70 × 50 =
  8. 8.12 × 50 =
  9. 9.44 × 5 =
  10. 10.27 × 50 =
  11. 11.93 × 5 =
  12. 12.59 × 5 =
  13. 13.23 × 50 =
  14. 14.41 × 50 =
  15. 15.23 × 50 =
  16. 16.45 × 5 =
  17. 17.23 × 5 =
  18. 18.17 × 50 =
  19. 19.49 × 50 =
  20. 20.77 × 5 =
  21. 21.13 × 50 =
  22. 22.13 × 50 =
  23. 23.95 × 5 =
  24. 24.40 × 5 =
  25. 25.36 × 50 =
  26. 26.91 × 5 =
  27. 27.73 × 50 =
  28. 28.12 × 5 =
  29. 29.69 × 50 =
  30. 30.37 × 5 =
  31. 31.12 × 50 =
  32. 32.70 × 5 =
  33. 33.96 × 50 =
  34. 34.52 × 50 =
  35. 35.88 × 5 =
  36. 36.18 × 5 =
  37. 37.88 × 50 =
  38. 38.64 × 50 =
  39. 39.55 × 50 =
  40. 40.95 × 50 =

Answer key

  1. 160
  2. 365
  3. 380
  4. 1400
  5. 450
  6. 455
  7. 3500
  8. 600
  9. 220
  10. 1350
  11. 465
  12. 295
  13. 1150
  14. 2050
  15. 1150
  16. 225
  17. 115
  18. 850
  19. 2450
  20. 385
  21. 650
  22. 650
  23. 475
  24. 200
  25. 1800
  26. 455
  27. 3650
  28. 60
  29. 3450
  30. 185
  31. 600
  32. 350
  33. 4800
  34. 2600
  35. 440
  36. 90
  37. 4400
  38. 3200
  39. 2750
  40. 4750

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