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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 870 · 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. 1.46 × 5 =
  2. 2.69 × 5 =
  3. 3.65 × 5 =
  4. 4.21 × 50 =
  5. 5.34 × 5 =
  6. 6.89 × 5 =
  7. 7.63 × 50 =
  8. 8.85 × 50 =
  9. 9.69 × 50 =
  10. 10.75 × 5 =
  11. 11.58 × 50 =
  12. 12.74 × 5 =
  13. 13.37 × 50 =
  14. 14.95 × 5 =
  15. 15.53 × 5 =
  16. 16.44 × 5 =
  17. 17.97 × 50 =
  18. 18.88 × 50 =
  19. 19.19 × 5 =
  20. 20.24 × 50 =
  21. 21.24 × 5 =
  22. 22.73 × 50 =
  23. 23.68 × 5 =
  24. 24.18 × 5 =
  25. 25.34 × 5 =
  26. 26.22 × 50 =
  27. 27.74 × 50 =
  28. 28.49 × 5 =
  29. 29.21 × 50 =
  30. 30.38 × 50 =
  31. 31.54 × 50 =
  32. 32.64 × 50 =
  33. 33.47 × 5 =
  34. 34.37 × 5 =
  35. 35.40 × 5 =
  36. 36.30 × 50 =
  37. 37.43 × 50 =
  38. 38.20 × 50 =
  39. 39.12 × 5 =
  40. 40.68 × 50 =

Answer key

  1. 230
  2. 345
  3. 325
  4. 1050
  5. 170
  6. 445
  7. 3150
  8. 4250
  9. 3450
  10. 375
  11. 2900
  12. 370
  13. 1850
  14. 475
  15. 265
  16. 220
  17. 4850
  18. 4400
  19. 95
  20. 1200
  21. 120
  22. 3650
  23. 340
  24. 90
  25. 170
  26. 1100
  27. 3700
  28. 245
  29. 1050
  30. 1900
  31. 2700
  32. 3200
  33. 235
  34. 185
  35. 200
  36. 1500
  37. 2150
  38. 1000
  39. 60
  40. 3400

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