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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 511 · 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. 2.26 × 5 =
  3. 3.57 × 50 =
  4. 4.86 × 5 =
  5. 5.85 × 5 =
  6. 6.94 × 5 =
  7. 7.33 × 5 =
  8. 8.59 × 5 =
  9. 9.14 × 50 =
  10. 10.86 × 50 =
  11. 11.77 × 50 =
  12. 12.23 × 50 =
  13. 13.75 × 5 =
  14. 14.70 × 5 =
  15. 15.47 × 50 =
  16. 16.94 × 5 =
  17. 17.26 × 50 =
  18. 18.77 × 5 =
  19. 19.69 × 50 =
  20. 20.20 × 5 =
  21. 21.80 × 50 =
  22. 22.50 × 50 =
  23. 23.46 × 5 =
  24. 24.19 × 5 =
  25. 25.44 × 5 =
  26. 26.55 × 5 =
  27. 27.57 × 50 =
  28. 28.20 × 50 =
  29. 29.94 × 5 =
  30. 30.49 × 5 =
  31. 31.66 × 50 =
  32. 32.21 × 5 =
  33. 33.65 × 5 =
  34. 34.36 × 5 =
  35. 35.38 × 50 =
  36. 36.94 × 50 =
  37. 37.95 × 5 =
  38. 38.68 × 50 =
  39. 39.34 × 5 =
  40. 40.80 × 5 =

Answer key

  1. 130
  2. 130
  3. 2850
  4. 430
  5. 425
  6. 470
  7. 165
  8. 295
  9. 700
  10. 4300
  11. 3850
  12. 1150
  13. 375
  14. 350
  15. 2350
  16. 470
  17. 1300
  18. 385
  19. 3450
  20. 100
  21. 4000
  22. 2500
  23. 230
  24. 95
  25. 220
  26. 275
  27. 2850
  28. 1000
  29. 470
  30. 245
  31. 3300
  32. 105
  33. 325
  34. 180
  35. 1900
  36. 4700
  37. 475
  38. 3400
  39. 170
  40. 400

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