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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 895 · 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. 1.88 × 5 =
  2. 2.26 × 50 =
  3. 3.69 × 50 =
  4. 4.14 × 5 =
  5. 5.46 × 5 =
  6. 6.84 × 5 =
  7. 7.24 × 50 =
  8. 8.67 × 5 =
  9. 9.26 × 5 =
  10. 10.33 × 5 =
  11. 11.20 × 50 =
  12. 12.32 × 5 =
  13. 13.18 × 50 =
  14. 14.36 × 5 =
  15. 15.79 × 5 =
  16. 16.27 × 5 =
  17. 17.31 × 50 =
  18. 18.67 × 50 =
  19. 19.35 × 50 =
  20. 20.59 × 5 =
  21. 21.45 × 5 =
  22. 22.60 × 50 =
  23. 23.49 × 5 =
  24. 24.32 × 5 =
  25. 25.87 × 50 =
  26. 26.61 × 5 =
  27. 27.63 × 5 =
  28. 28.92 × 50 =
  29. 29.25 × 5 =
  30. 30.21 × 5 =
  31. 31.87 × 50 =
  32. 32.96 × 5 =
  33. 33.46 × 50 =
  34. 34.55 × 5 =
  35. 35.98 × 5 =
  36. 36.51 × 50 =
  37. 37.63 × 50 =
  38. 38.57 × 5 =
  39. 39.75 × 50 =
  40. 40.38 × 50 =

Answer key

  1. 440
  2. 1300
  3. 3450
  4. 70
  5. 230
  6. 420
  7. 1200
  8. 335
  9. 130
  10. 165
  11. 1000
  12. 160
  13. 900
  14. 180
  15. 395
  16. 135
  17. 1550
  18. 3350
  19. 1750
  20. 295
  21. 225
  22. 3000
  23. 245
  24. 160
  25. 4350
  26. 305
  27. 315
  28. 4600
  29. 125
  30. 105
  31. 4350
  32. 480
  33. 2300
  34. 275
  35. 490
  36. 2550
  37. 3150
  38. 285
  39. 3750
  40. 1900

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