Multiply by 12, 16, 18 and 24 Worksheet

Maths tricks trick 19: Factor chains for multiplying · Set 896 · 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. 1.22 × 16 =
2. 2.19 × 15 =
3. 3.24 × 24 =
4. 4.14 × 24 =
5. 5.33 × 24 =
6. 6.34 × 15 =
7. 7.26 × 16 =
8. 8.40 × 18 =
9. 9.21 × 24 =
10. 10.26 × 15 =
11. 11.38 × 18 =
12. 12.22 × 18 =
13. 13.43 × 12 =
14. 14.12 × 12 =
15. 15.12 × 14 =
16. 16.16 × 12 =
17. 17.42 × 24 =
18. 18.35 × 15 =
19. 19.26 × 24 =
20. 20.42 × 15 =
21. 21.38 × 14 =
22. 22.15 × 18 =
23. 23.49 × 15 =
24. 24.22 × 12 =
25. 25.45 × 15 =
26. 26.34 × 12 =
27. 27.18 × 12 =
28. 28.19 × 24 =
29. 29.18 × 16 =
30. 30.13 × 12 =
31. 31.29 × 14 =
32. 32.14 × 12 =
33. 33.11 × 14 =
34. 34.38 × 12 =
35. 35.20 × 14 =
36. 36.20 × 18 =
37. 37.23 × 15 =
38. 38.31 × 12 =
39. 39.13 × 15 =
40. 40.22 × 15 =

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