Multiply by 4 and 8 Worksheet

Speed calculation lesson 6: Doubling sprints: × 4 and × 8 · Set 626 · 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. 1.75 × 8 =
2. 2.24 × 4 =
3. 3.73 × 8 =
4. 4.83 × 4 =
5. 5.65 × 4 =
6. 6.73 × 8 =
7. 7.23 × 4 =
8. 8.95 × 4 =
9. 9.86 × 4 =
10. 10.35 × 8 =
11. 11.118 × 4 =
12. 12.139 × 4 =
13. 13.158 × 4 =
14. 14.35 × 4 =
15. 15.24 × 8 =
16. 16.148 × 4 =
17. 17.40 × 4 =
18. 18.117 × 4 =
19. 19.39 × 8 =
20. 20.20 × 8 =
21. 21.58 × 4 =
22. 22.93 × 4 =
23. 23.73 × 8 =
24. 24.67 × 8 =
25. 25.47 × 8 =
26. 26.22 × 8 =
27. 27.18 × 8 =
28. 28.69 × 4 =
29. 29.23 × 4 =
30. 30.26 × 4 =
31. 31.34 × 4 =
32. 32.92 × 4 =
33. 33.69 × 4 =
34. 34.41 × 8 =
35. 35.63 × 8 =
36. 36.150 × 4 =
37. 37.74 × 4 =
38. 38.131 × 4 =
39. 39.64 × 8 =
40. 40.69 × 4 =

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