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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 832 · 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. 1.97 × 50 =
  2. 2.66 × 50 =
  3. 3.55 × 5 =
  4. 4.16 × 5 =
  5. 5.89 × 50 =
  6. 6.56 × 5 =
  7. 7.53 × 50 =
  8. 8.68 × 5 =
  9. 9.37 × 5 =
  10. 10.12 × 50 =
  11. 11.51 × 5 =
  12. 12.87 × 5 =
  13. 13.32 × 5 =
  14. 14.25 × 50 =
  15. 15.46 × 5 =
  16. 16.73 × 50 =
  17. 17.98 × 5 =
  18. 18.45 × 50 =
  19. 19.58 × 5 =
  20. 20.19 × 50 =
  21. 21.77 × 50 =
  22. 22.75 × 50 =
  23. 23.70 × 5 =
  24. 24.60 × 50 =
  25. 25.23 × 5 =
  26. 26.96 × 50 =
  27. 27.57 × 50 =
  28. 28.98 × 5 =
  29. 29.52 × 50 =
  30. 30.12 × 50 =
  31. 31.50 × 5 =
  32. 32.20 × 50 =
  33. 33.20 × 5 =
  34. 34.25 × 50 =
  35. 35.74 × 5 =
  36. 36.93 × 50 =
  37. 37.69 × 50 =
  38. 38.95 × 5 =
  39. 39.93 × 50 =
  40. 40.71 × 5 =

Answer key

  1. 4850
  2. 3300
  3. 275
  4. 80
  5. 4450
  6. 280
  7. 2650
  8. 340
  9. 185
  10. 600
  11. 255
  12. 435
  13. 160
  14. 1250
  15. 230
  16. 3650
  17. 490
  18. 2250
  19. 290
  20. 950
  21. 3850
  22. 3750
  23. 350
  24. 3000
  25. 115
  26. 4800
  27. 2850
  28. 490
  29. 2600
  30. 600
  31. 250
  32. 1000
  33. 100
  34. 1250
  35. 370
  36. 4650
  37. 3450
  38. 475
  39. 4650
  40. 355

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