Multiply by 12, 16, 18 and 24 Worksheet

Maths tricks trick 19: Factor chains for multiplying · Set 811 · 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. 1.12 × 14 =
2. 2.42 × 24 =
3. 3.41 × 24 =
4. 4.15 × 24 =
5. 5.13 × 16 =
6. 6.30 × 18 =
7. 7.43 × 15 =
8. 8.21 × 12 =
9. 9.13 × 24 =
10. 10.41 × 14 =
11. 11.35 × 15 =
12. 12.49 × 14 =
13. 13.33 × 18 =
14. 14.48 × 16 =
15. 15.25 × 15 =
16. 16.39 × 24 =
17. 17.22 × 14 =
18. 18.32 × 18 =
19. 19.22 × 12 =
20. 20.23 × 16 =
21. 21.46 × 12 =
22. 22.17 × 16 =
23. 23.15 × 16 =
24. 24.38 × 15 =
25. 25.14 × 15 =
26. 26.40 × 16 =
27. 27.16 × 15 =
28. 28.35 × 24 =
29. 29.26 × 18 =
30. 30.43 × 18 =
31. 31.19 × 24 =
32. 32.14 × 16 =
33. 33.33 × 24 =
34. 34.15 × 14 =
35. 35.15 × 18 =
36. 36.40 × 14 =
37. 37.30 × 12 =
38. 38.28 × 18 =
39. 39.18 × 15 =
40. 40.45 × 18 =

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