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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 691 · 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. 1.47 × 5 =
  2. 2.39 × 5 =
  3. 3.63 × 5 =
  4. 4.84 × 5 =
  5. 5.28 × 5 =
  6. 6.27 × 5 =
  7. 7.57 × 50 =
  8. 8.88 × 5 =
  9. 9.44 × 50 =
  10. 10.86 × 50 =
  11. 11.19 × 50 =
  12. 12.80 × 50 =
  13. 13.70 × 50 =
  14. 14.34 × 5 =
  15. 15.74 × 5 =
  16. 16.19 × 5 =
  17. 17.22 × 5 =
  18. 18.25 × 50 =
  19. 19.68 × 5 =
  20. 20.45 × 5 =
  21. 21.17 × 5 =
  22. 22.98 × 5 =
  23. 23.70 × 5 =
  24. 24.34 × 5 =
  25. 25.98 × 50 =
  26. 26.21 × 5 =
  27. 27.75 × 50 =
  28. 28.48 × 5 =
  29. 29.85 × 5 =
  30. 30.89 × 50 =
  31. 31.61 × 5 =
  32. 32.96 × 5 =
  33. 33.52 × 50 =
  34. 34.25 × 5 =
  35. 35.51 × 5 =
  36. 36.14 × 50 =
  37. 37.54 × 5 =
  38. 38.74 × 5 =
  39. 39.20 × 5 =
  40. 40.35 × 5 =

Answer key

  1. 235
  2. 195
  3. 315
  4. 420
  5. 140
  6. 135
  7. 2850
  8. 440
  9. 2200
  10. 4300
  11. 950
  12. 4000
  13. 3500
  14. 170
  15. 370
  16. 95
  17. 110
  18. 1250
  19. 340
  20. 225
  21. 85
  22. 490
  23. 350
  24. 170
  25. 4900
  26. 105
  27. 3750
  28. 240
  29. 425
  30. 4450
  31. 305
  32. 480
  33. 2600
  34. 125
  35. 255
  36. 700
  37. 270
  38. 370
  39. 100
  40. 175

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