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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 927 · 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. 1.26 × 5 =
  2. 2.45 × 5 =
  3. 3.85 × 50 =
  4. 4.60 × 5 =
  5. 5.87 × 50 =
  6. 6.43 × 50 =
  7. 7.97 × 5 =
  8. 8.67 × 5 =
  9. 9.51 × 5 =
  10. 10.68 × 5 =
  11. 11.82 × 50 =
  12. 12.97 × 5 =
  13. 13.68 × 50 =
  14. 14.57 × 5 =
  15. 15.63 × 5 =
  16. 16.76 × 50 =
  17. 17.31 × 5 =
  18. 18.50 × 5 =
  19. 19.50 × 5 =
  20. 20.85 × 50 =
  21. 21.47 × 5 =
  22. 22.65 × 5 =
  23. 23.55 × 5 =
  24. 24.38 × 50 =
  25. 25.15 × 50 =
  26. 26.98 × 5 =
  27. 27.16 × 5 =
  28. 28.93 × 5 =
  29. 29.79 × 5 =
  30. 30.61 × 5 =
  31. 31.65 × 5 =
  32. 32.38 × 50 =
  33. 33.45 × 5 =
  34. 34.44 × 50 =
  35. 35.13 × 50 =
  36. 36.48 × 50 =
  37. 37.24 × 5 =
  38. 38.71 × 50 =
  39. 39.75 × 50 =
  40. 40.98 × 5 =

Answer key

  1. 130
  2. 225
  3. 4250
  4. 300
  5. 4350
  6. 2150
  7. 485
  8. 335
  9. 255
  10. 340
  11. 4100
  12. 485
  13. 3400
  14. 285
  15. 315
  16. 3800
  17. 155
  18. 250
  19. 250
  20. 4250
  21. 235
  22. 325
  23. 275
  24. 1900
  25. 750
  26. 490
  27. 80
  28. 465
  29. 395
  30. 305
  31. 325
  32. 1900
  33. 225
  34. 2200
  35. 650
  36. 2400
  37. 120
  38. 3550
  39. 3750
  40. 490

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