Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 484 · 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. 1.78 × 50 =
2. 2.97 × 50 =
3. 3.81 × 50 =
4. 4.69 × 50 =
5. 5.79 × 50 =
6. 6.54 × 50 =
7. 7.16 × 5 =
8. 8.72 × 50 =
9. 9.96 × 50 =
10. 10.74 × 5 =
11. 11.83 × 5 =
12. 12.37 × 50 =
13. 13.18 × 5 =
14. 14.68 × 50 =
15. 15.16 × 50 =
16. 16.34 × 50 =
17. 17.91 × 5 =
18. 18.51 × 50 =
19. 19.63 × 5 =
20. 20.34 × 5 =
21. 21.31 × 50 =
22. 22.13 × 50 =
23. 23.63 × 50 =
24. 24.54 × 5 =
25. 25.71 × 5 =
26. 26.19 × 5 =
27. 27.77 × 50 =
28. 28.47 × 5 =
29. 29.30 × 5 =
30. 30.33 × 50 =
31. 31.55 × 50 =
32. 32.58 × 50 =
33. 33.85 × 5 =
34. 34.16 × 5 =
35. 35.69 × 5 =
36. 36.27 × 5 =
37. 37.60 × 5 =
38. 38.49 × 50 =
39. 39.71 × 50 =
40. 40.31 × 50 =

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