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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 197 · 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. 1.98 × 5 =
  2. 2.41 × 5 =
  3. 3.96 × 50 =
  4. 4.25 × 50 =
  5. 5.92 × 5 =
  6. 6.31 × 5 =
  7. 7.65 × 50 =
  8. 8.20 × 5 =
  9. 9.23 × 5 =
  10. 10.18 × 50 =
  11. 11.86 × 50 =
  12. 12.80 × 5 =
  13. 13.16 × 5 =
  14. 14.48 × 50 =
  15. 15.30 × 50 =
  16. 16.22 × 5 =
  17. 17.67 × 5 =
  18. 18.20 × 50 =
  19. 19.27 × 50 =
  20. 20.95 × 5 =
  21. 21.68 × 50 =
  22. 22.37 × 5 =
  23. 23.90 × 5 =
  24. 24.21 × 50 =
  25. 25.95 × 5 =
  26. 26.56 × 5 =
  27. 27.53 × 50 =
  28. 28.52 × 5 =
  29. 29.71 × 50 =
  30. 30.28 × 50 =
  31. 31.26 × 5 =
  32. 32.13 × 5 =
  33. 33.59 × 5 =
  34. 34.57 × 50 =
  35. 35.56 × 50 =
  36. 36.22 × 50 =
  37. 37.26 × 50 =
  38. 38.40 × 5 =
  39. 39.16 × 5 =
  40. 40.34 × 50 =

Answer key

  1. 490
  2. 205
  3. 4800
  4. 1250
  5. 460
  6. 155
  7. 3250
  8. 100
  9. 115
  10. 900
  11. 4300
  12. 400
  13. 80
  14. 2400
  15. 1500
  16. 110
  17. 335
  18. 1000
  19. 1350
  20. 475
  21. 3400
  22. 185
  23. 450
  24. 1050
  25. 475
  26. 280
  27. 2650
  28. 260
  29. 3550
  30. 1400
  31. 130
  32. 65
  33. 295
  34. 2850
  35. 2800
  36. 1100
  37. 1300
  38. 200
  39. 80
  40. 1700

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