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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 196 · 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. 1.95 × 5 =
  2. 2.31 × 5 =
  3. 3.29 × 5 =
  4. 4.85 × 50 =
  5. 5.98 × 5 =
  6. 6.48 × 50 =
  7. 7.76 × 5 =
  8. 8.36 × 5 =
  9. 9.42 × 50 =
  10. 10.17 × 5 =
  11. 11.96 × 5 =
  12. 12.80 × 5 =
  13. 13.69 × 5 =
  14. 14.31 × 5 =
  15. 15.57 × 5 =
  16. 16.90 × 50 =
  17. 17.25 × 50 =
  18. 18.54 × 50 =
  19. 19.67 × 5 =
  20. 20.73 × 5 =
  21. 21.33 × 50 =
  22. 22.78 × 5 =
  23. 23.86 × 5 =
  24. 24.70 × 50 =
  25. 25.33 × 5 =
  26. 26.36 × 50 =
  27. 27.14 × 5 =
  28. 28.47 × 50 =
  29. 29.57 × 50 =
  30. 30.18 × 50 =
  31. 31.38 × 5 =
  32. 32.28 × 50 =
  33. 33.70 × 5 =
  34. 34.42 × 5 =
  35. 35.68 × 5 =
  36. 36.43 × 5 =
  37. 37.49 × 50 =
  38. 38.92 × 50 =
  39. 39.16 × 5 =
  40. 40.44 × 50 =

Answer key

  1. 475
  2. 155
  3. 145
  4. 4250
  5. 490
  6. 2400
  7. 380
  8. 180
  9. 2100
  10. 85
  11. 480
  12. 400
  13. 345
  14. 155
  15. 285
  16. 4500
  17. 1250
  18. 2700
  19. 335
  20. 365
  21. 1650
  22. 390
  23. 430
  24. 3500
  25. 165
  26. 1800
  27. 70
  28. 2350
  29. 2850
  30. 900
  31. 190
  32. 1400
  33. 350
  34. 210
  35. 340
  36. 215
  37. 2450
  38. 4600
  39. 80
  40. 2200

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