Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 354 · 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. 1.74 × 5 =
2. 2.78 × 50 =
3. 3.20 × 50 =
4. 4.27 × 5 =
5. 5.72 × 5 =
6. 6.42 × 50 =
7. 7.66 × 5 =
8. 8.93 × 50 =
9. 9.26 × 5 =
10. 10.28 × 5 =
11. 11.23 × 5 =
12. 12.87 × 5 =
13. 13.14 × 50 =
14. 14.41 × 5 =
15. 15.16 × 50 =
16. 16.28 × 5 =
17. 17.66 × 50 =
18. 18.70 × 5 =
19. 19.13 × 5 =
20. 20.85 × 5 =
21. 21.17 × 5 =
22. 22.45 × 50 =
23. 23.13 × 5 =
24. 24.74 × 50 =
25. 25.39 × 50 =
26. 26.41 × 5 =
27. 27.50 × 50 =
28. 28.24 × 5 =
29. 29.29 × 50 =
30. 30.82 × 5 =
31. 31.24 × 50 =
32. 32.80 × 50 =
33. 33.37 × 5 =
34. 34.28 × 5 =
35. 35.94 × 5 =
36. 36.66 × 5 =
37. 37.40 × 50 =
38. 38.77 × 50 =
39. 39.41 × 5 =
40. 40.52 × 5 =

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