Multiply by 12, 16, 18 and 24 Worksheet

Maths tricks trick 19: Factor chains for multiplying · Set 131 · 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. 1.42 × 18 =
2. 2.19 × 18 =
3. 3.14 × 14 =
4. 4.43 × 12 =
5. 5.20 × 24 =
6. 6.12 × 16 =
7. 7.16 × 12 =
8. 8.31 × 12 =
9. 9.18 × 14 =
10. 10.11 × 16 =
11. 11.29 × 24 =
12. 12.17 × 16 =
13. 13.11 × 18 =
14. 14.38 × 18 =
15. 15.35 × 16 =
16. 16.30 × 15 =
17. 17.33 × 12 =
18. 18.21 × 16 =
19. 19.48 × 24 =
20. 20.27 × 16 =
21. 21.42 × 15 =
22. 22.28 × 18 =
23. 23.42 × 14 =
24. 24.12 × 15 =
25. 25.48 × 16 =
26. 26.44 × 14 =
27. 27.16 × 16 =
28. 28.14 × 15 =
29. 29.14 × 24 =
30. 30.27 × 18 =
31. 31.11 × 14 =
32. 32.41 × 18 =
33. 33.25 × 14 =
34. 34.17 × 12 =
35. 35.44 × 12 =
36. 36.12 × 14 =
37. 37.41 × 12 =
38. 38.19 × 12 =
39. 39.36 × 18 =
40. 40.30 × 14 =

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