Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 453 · 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. 1.52 × 5 =
2. 2.65 × 50 =
3. 3.86 × 50 =
4. 4.57 × 50 =
5. 5.52 × 50 =
6. 6.81 × 5 =
7. 7.73 × 50 =
8. 8.91 × 5 =
9. 9.55 × 50 =
10. 10.79 × 5 =
11. 11.36 × 50 =
12. 12.50 × 5 =
13. 13.77 × 50 =
14. 14.18 × 5 =
15. 15.48 × 50 =
16. 16.77 × 50 =
17. 17.19 × 50 =
18. 18.24 × 50 =
19. 19.71 × 50 =
20. 20.28 × 5 =
21. 21.71 × 5 =
22. 22.61 × 50 =
23. 23.81 × 5 =
24. 24.97 × 50 =
25. 25.18 × 5 =
26. 26.27 × 5 =
27. 27.80 × 5 =
28. 28.51 × 5 =
29. 29.76 × 50 =
30. 30.71 × 50 =
31. 31.51 × 50 =
32. 32.75 × 5 =
33. 33.15 × 5 =
34. 34.50 × 50 =
35. 35.52 × 50 =
36. 36.52 × 50 =
37. 37.28 × 50 =
38. 38.88 × 50 =
39. 39.20 × 5 =
40. 40.46 × 50 =

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