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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 334 · 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. 1.38 × 50 =
  2. 2.93 × 5 =
  3. 3.35 × 5 =
  4. 4.13 × 50 =
  5. 5.64 × 5 =
  6. 6.61 × 50 =
  7. 7.64 × 50 =
  8. 8.95 × 5 =
  9. 9.32 × 50 =
  10. 10.92 × 5 =
  11. 11.18 × 50 =
  12. 12.70 × 5 =
  13. 13.68 × 50 =
  14. 14.61 × 5 =
  15. 15.60 × 5 =
  16. 16.29 × 5 =
  17. 17.27 × 5 =
  18. 18.90 × 5 =
  19. 19.36 × 50 =
  20. 20.38 × 50 =
  21. 21.51 × 5 =
  22. 22.37 × 5 =
  23. 23.34 × 5 =
  24. 24.97 × 5 =
  25. 25.42 × 50 =
  26. 26.79 × 50 =
  27. 27.62 × 5 =
  28. 28.93 × 5 =
  29. 29.68 × 5 =
  30. 30.91 × 50 =
  31. 31.98 × 50 =
  32. 32.21 × 50 =
  33. 33.52 × 5 =
  34. 34.86 × 50 =
  35. 35.14 × 50 =
  36. 36.60 × 5 =
  37. 37.57 × 50 =
  38. 38.74 × 5 =
  39. 39.45 × 5 =
  40. 40.35 × 5 =

Answer key

  1. 1900
  2. 465
  3. 175
  4. 650
  5. 320
  6. 3050
  7. 3200
  8. 475
  9. 1600
  10. 460
  11. 900
  12. 350
  13. 3400
  14. 305
  15. 300
  16. 145
  17. 135
  18. 450
  19. 1800
  20. 1900
  21. 255
  22. 185
  23. 170
  24. 485
  25. 2100
  26. 3950
  27. 310
  28. 465
  29. 340
  30. 4550
  31. 4900
  32. 1050
  33. 260
  34. 4300
  35. 700
  36. 300
  37. 2850
  38. 370
  39. 225
  40. 175

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