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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 47 · 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. 1.61 × 5 =
  2. 2.34 × 5 =
  3. 3.46 × 5 =
  4. 4.54 × 50 =
  5. 5.58 × 50 =
  6. 6.52 × 5 =
  7. 7.32 × 5 =
  8. 8.69 × 50 =
  9. 9.85 × 5 =
  10. 10.12 × 5 =
  11. 11.29 × 50 =
  12. 12.67 × 5 =
  13. 13.25 × 50 =
  14. 14.50 × 5 =
  15. 15.20 × 5 =
  16. 16.56 × 50 =
  17. 17.26 × 5 =
  18. 18.83 × 5 =
  19. 19.43 × 50 =
  20. 20.74 × 5 =
  21. 21.20 × 5 =
  22. 22.40 × 50 =
  23. 23.38 × 5 =
  24. 24.54 × 50 =
  25. 25.47 × 50 =
  26. 26.20 × 5 =
  27. 27.80 × 5 =
  28. 28.36 × 5 =
  29. 29.41 × 5 =
  30. 30.41 × 50 =
  31. 31.31 × 50 =
  32. 32.38 × 5 =
  33. 33.78 × 5 =
  34. 34.51 × 5 =
  35. 35.28 × 5 =
  36. 36.36 × 5 =
  37. 37.59 × 50 =
  38. 38.51 × 5 =
  39. 39.44 × 50 =
  40. 40.68 × 50 =

Answer key

  1. 305
  2. 170
  3. 230
  4. 2700
  5. 2900
  6. 260
  7. 160
  8. 3450
  9. 425
  10. 60
  11. 1450
  12. 335
  13. 1250
  14. 250
  15. 100
  16. 2800
  17. 130
  18. 415
  19. 2150
  20. 370
  21. 100
  22. 2000
  23. 190
  24. 2700
  25. 2350
  26. 100
  27. 400
  28. 180
  29. 205
  30. 2050
  31. 1550
  32. 190
  33. 390
  34. 255
  35. 140
  36. 180
  37. 2950
  38. 255
  39. 2200
  40. 3400

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