Multiply by 12, 16, 18 and 24 Worksheet

Maths tricks trick 19: Factor chains for multiplying · Set 911 · 40 questions

The trick (Chain the factors): Split the multiplier into two small factors: 12 = 3 × 4, 14 = 2 × 7, 15 = 3 × 5, 16 = 4 × 4, 18 = 2 × 9, 24 = 4 × 6. Multiply by the first factor. Multiply that answer by the second factor (× 4 is double, double).

1. 1.15 × 15 =
2. 2.46 × 12 =
3. 3.12 × 14 =
4. 4.32 × 16 =
5. 5.25 × 14 =
6. 6.23 × 14 =
7. 7.38 × 12 =
8. 8.47 × 16 =
9. 9.39 × 15 =
10. 10.47 × 14 =
11. 11.45 × 18 =
12. 12.21 × 14 =
13. 13.21 × 16 =
14. 14.30 × 15 =
15. 15.45 × 16 =
16. 16.20 × 15 =
17. 17.26 × 24 =
18. 18.18 × 12 =
19. 19.19 × 12 =
20. 20.35 × 24 =
21. 21.12 × 15 =
22. 22.18 × 18 =
23. 23.39 × 14 =
24. 24.15 × 24 =
25. 25.43 × 15 =
26. 26.38 × 14 =
27. 27.35 × 12 =
28. 28.19 × 24 =
29. 29.32 × 18 =
30. 30.44 × 12 =
31. 31.17 × 14 =
32. 32.27 × 12 =
33. 33.20 × 14 =
34. 34.13 × 16 =
35. 35.22 × 15 =
36. 36.40 × 12 =
37. 37.29 × 12 =
38. 38.20 × 24 =
39. 39.11 × 12 =
40. 40.47 × 12 =

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