Multiply by 4 and 8 Worksheet

Speed calculation lesson 6: Doubling sprints: × 4 and × 8 · Set 800 · 40 questions

The fast method (Double up): × 4: double, then double again. × 8: double three times. To double a big number, double the tens and the ones separately and add: double 37 = 60 + 14 = 74.

1. 1.32 × 8 =
2. 2.54 × 8 =
3. 3.24 × 4 =
4. 4.36 × 8 =
5. 5.29 × 8 =
6. 6.32 × 8 =
7. 7.76 × 4 =
8. 8.88 × 4 =
9. 9.30 × 8 =
10. 10.52 × 4 =
11. 11.16 × 8 =
12. 12.14 × 8 =
13. 13.84 × 4 =
14. 14.104 × 4 =
15. 15.98 × 4 =
16. 16.17 × 8 =
17. 17.44 × 8 =
18. 18.73 × 8 =
19. 19.21 × 4 =
20. 20.50 × 8 =
21. 21.155 × 4 =
22. 22.31 × 4 =
23. 23.15 × 8 =
24. 24.53 × 4 =
25. 25.62 × 8 =
26. 26.17 × 4 =
27. 27.97 × 4 =
28. 28.107 × 4 =
29. 29.33 × 8 =
30. 30.92 × 4 =
31. 31.117 × 4 =
32. 32.29 × 4 =
33. 33.39 × 8 =
34. 34.156 × 4 =
35. 35.47 × 4 =
36. 36.75 × 8 =
37. 37.93 × 4 =
38. 38.38 × 4 =
39. 39.158 × 4 =
40. 40.19 × 4 =

Free speed calculation lessons, practice and worksheets at talentjr.in/speed-maths