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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 274 · 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. 1.62 × 5 =
  2. 2.96 × 5 =
  3. 3.67 × 5 =
  4. 4.84 × 50 =
  5. 5.74 × 5 =
  6. 6.36 × 5 =
  7. 7.85 × 50 =
  8. 8.13 × 50 =
  9. 9.91 × 50 =
  10. 10.29 × 50 =
  11. 11.96 × 50 =
  12. 12.61 × 5 =
  13. 13.73 × 50 =
  14. 14.48 × 50 =
  15. 15.26 × 5 =
  16. 16.30 × 50 =
  17. 17.65 × 5 =
  18. 18.80 × 50 =
  19. 19.73 × 5 =
  20. 20.45 × 50 =
  21. 21.17 × 5 =
  22. 22.87 × 5 =
  23. 23.36 × 5 =
  24. 24.56 × 50 =
  25. 25.22 × 50 =
  26. 26.32 × 5 =
  27. 27.28 × 50 =
  28. 28.18 × 5 =
  29. 29.39 × 50 =
  30. 30.41 × 50 =
  31. 31.56 × 5 =
  32. 32.77 × 5 =
  33. 33.84 × 50 =
  34. 34.19 × 50 =
  35. 35.77 × 50 =
  36. 36.66 × 5 =
  37. 37.88 × 5 =
  38. 38.33 × 5 =
  39. 39.30 × 50 =
  40. 40.26 × 5 =

Answer key

  1. 310
  2. 480
  3. 335
  4. 4200
  5. 370
  6. 180
  7. 4250
  8. 650
  9. 4550
  10. 1450
  11. 4800
  12. 305
  13. 3650
  14. 2400
  15. 130
  16. 1500
  17. 325
  18. 4000
  19. 365
  20. 2250
  21. 85
  22. 435
  23. 180
  24. 2800
  25. 1100
  26. 160
  27. 1400
  28. 90
  29. 1950
  30. 2050
  31. 280
  32. 385
  33. 4200
  34. 950
  35. 3850
  36. 330
  37. 440
  38. 165
  39. 1500
  40. 130

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