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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 307 · 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. 1.92 × 5 =
  2. 2.62 × 5 =
  3. 3.27 × 50 =
  4. 4.23 × 50 =
  5. 5.44 × 5 =
  6. 6.87 × 50 =
  7. 7.63 × 5 =
  8. 8.47 × 50 =
  9. 9.44 × 5 =
  10. 10.23 × 5 =
  11. 11.40 × 5 =
  12. 12.55 × 50 =
  13. 13.57 × 5 =
  14. 14.20 × 50 =
  15. 15.42 × 50 =
  16. 16.34 × 50 =
  17. 17.25 × 5 =
  18. 18.61 × 50 =
  19. 19.32 × 5 =
  20. 20.31 × 50 =
  21. 21.26 × 5 =
  22. 22.24 × 5 =
  23. 23.74 × 5 =
  24. 24.95 × 5 =
  25. 25.86 × 5 =
  26. 26.72 × 5 =
  27. 27.42 × 50 =
  28. 28.26 × 5 =
  29. 29.24 × 5 =
  30. 30.57 × 50 =
  31. 31.54 × 50 =
  32. 32.91 × 5 =
  33. 33.19 × 50 =
  34. 34.55 × 50 =
  35. 35.45 × 5 =
  36. 36.52 × 50 =
  37. 37.56 × 5 =
  38. 38.91 × 5 =
  39. 39.53 × 5 =
  40. 40.29 × 5 =

Answer key

  1. 460
  2. 310
  3. 1350
  4. 1150
  5. 220
  6. 4350
  7. 315
  8. 2350
  9. 220
  10. 115
  11. 200
  12. 2750
  13. 285
  14. 1000
  15. 2100
  16. 1700
  17. 125
  18. 3050
  19. 160
  20. 1550
  21. 130
  22. 120
  23. 370
  24. 475
  25. 430
  26. 360
  27. 2100
  28. 130
  29. 120
  30. 2850
  31. 2700
  32. 455
  33. 950
  34. 2750
  35. 225
  36. 2600
  37. 280
  38. 455
  39. 265
  40. 145

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