Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 771 · 40 questions

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.

1. 1.60 × 50 =
2. 2.18 × 50 =
3. 3.25 × 5 =
4. 4.20 × 5 =
5. 5.40 × 50 =
6. 6.27 × 5 =
7. 7.93 × 5 =
8. 8.31 × 5 =
9. 9.66 × 5 =
10. 10.31 × 50 =
11. 11.89 × 5 =
12. 12.30 × 5 =
13. 13.38 × 5 =
14. 14.64 × 5 =
15. 15.26 × 5 =
16. 16.21 × 5 =
17. 17.48 × 50 =
18. 18.47 × 5 =
19. 19.83 × 5 =
20. 20.72 × 50 =
21. 21.36 × 5 =
22. 22.62 × 5 =
23. 23.23 × 50 =
24. 24.75 × 5 =
25. 25.55 × 5 =
26. 26.38 × 5 =
27. 27.84 × 5 =
28. 28.77 × 5 =
29. 29.47 × 50 =
30. 30.18 × 5 =
31. 31.82 × 5 =
32. 32.35 × 50 =
33. 33.77 × 5 =
34. 34.87 × 50 =
35. 35.58 × 50 =
36. 36.37 × 50 =
37. 37.17 × 50 =
38. 38.55 × 5 =
39. 39.62 × 5 =
40. 40.19 × 50 =

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