Multiply by 12, 16, 18 and 24 Worksheet

Maths tricks trick 19: Factor chains for multiplying · Set 512 · 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. 1.28 × 14 =
2. 2.42 × 12 =
3. 3.21 × 18 =
4. 4.41 × 15 =
5. 5.42 × 24 =
6. 6.38 × 14 =
7. 7.11 × 14 =
8. 8.42 × 18 =
9. 9.46 × 15 =
10. 10.15 × 24 =
11. 11.21 × 14 =
12. 12.36 × 16 =
13. 13.20 × 24 =
14. 14.41 × 14 =
15. 15.11 × 16 =
16. 16.25 × 14 =
17. 17.34 × 18 =
18. 18.13 × 24 =
19. 19.20 × 14 =
20. 20.17 × 14 =
21. 21.48 × 15 =
22. 22.16 × 15 =
23. 23.12 × 24 =
24. 24.13 × 14 =
25. 25.43 × 15 =
26. 26.11 × 18 =
27. 27.15 × 12 =
28. 28.48 × 14 =
29. 29.35 × 24 =
30. 30.39 × 14 =
31. 31.41 × 12 =
32. 32.31 × 24 =
33. 33.45 × 18 =
34. 34.47 × 24 =
35. 35.28 × 12 =
36. 36.32 × 16 =
37. 37.33 × 14 =
38. 38.49 × 18 =
39. 39.18 × 12 =
40. 40.11 × 12 =

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