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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 686 · 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. 1.22 × 50 =
  2. 2.25 × 5 =
  3. 3.13 × 5 =
  4. 4.36 × 5 =
  5. 5.13 × 50 =
  6. 6.46 × 5 =
  7. 7.21 × 5 =
  8. 8.59 × 5 =
  9. 9.89 × 5 =
  10. 10.68 × 50 =
  11. 11.58 × 5 =
  12. 12.23 × 5 =
  13. 13.41 × 5 =
  14. 14.67 × 5 =
  15. 15.53 × 5 =
  16. 16.61 × 50 =
  17. 17.27 × 50 =
  18. 18.85 × 50 =
  19. 19.77 × 5 =
  20. 20.53 × 5 =
  21. 21.18 × 5 =
  22. 22.58 × 50 =
  23. 23.92 × 5 =
  24. 24.34 × 5 =
  25. 25.55 × 5 =
  26. 26.20 × 50 =
  27. 27.19 × 50 =
  28. 28.15 × 50 =
  29. 29.77 × 5 =
  30. 30.37 × 5 =
  31. 31.44 × 5 =
  32. 32.21 × 50 =
  33. 33.33 × 50 =
  34. 34.22 × 5 =
  35. 35.64 × 50 =
  36. 36.25 × 50 =
  37. 37.24 × 50 =
  38. 38.32 × 5 =
  39. 39.58 × 50 =
  40. 40.41 × 5 =

Answer key

  1. 1100
  2. 125
  3. 65
  4. 180
  5. 650
  6. 230
  7. 105
  8. 295
  9. 445
  10. 3400
  11. 290
  12. 115
  13. 205
  14. 335
  15. 265
  16. 3050
  17. 1350
  18. 4250
  19. 385
  20. 265
  21. 90
  22. 2900
  23. 460
  24. 170
  25. 275
  26. 1000
  27. 950
  28. 750
  29. 385
  30. 185
  31. 220
  32. 1050
  33. 1650
  34. 110
  35. 3200
  36. 1250
  37. 1200
  38. 160
  39. 2900
  40. 205

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