Multiply by 12, 16, 18 and 24 Worksheet

Maths tricks trick 19: Factor chains for multiplying · Set 965 · 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. 1.32 × 24 =
2. 2.16 × 18 =
3. 3.29 × 14 =
4. 4.40 × 18 =
5. 5.40 × 12 =
6. 6.18 × 14 =
7. 7.28 × 12 =
8. 8.25 × 12 =
9. 9.17 × 14 =
10. 10.11 × 14 =
11. 11.16 × 15 =
12. 12.28 × 16 =
13. 13.28 × 18 =
14. 14.30 × 14 =
15. 15.27 × 24 =
16. 16.30 × 12 =
17. 17.48 × 24 =
18. 18.35 × 12 =
19. 19.41 × 12 =
20. 20.21 × 16 =
21. 21.14 × 16 =
22. 22.12 × 24 =
23. 23.34 × 18 =
24. 24.37 × 14 =
25. 25.29 × 16 =
26. 26.29 × 12 =
27. 27.41 × 14 =
28. 28.42 × 15 =
29. 29.49 × 18 =
30. 30.35 × 14 =
31. 31.23 × 18 =
32. 32.14 × 15 =
33. 33.21 × 24 =
34. 34.19 × 18 =
35. 35.14 × 14 =
36. 36.15 × 15 =
37. 37.49 × 14 =
38. 38.33 × 14 =
39. 39.17 × 16 =
40. 40.40 × 14 =

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