Multiply by 12, 16, 18 and 24 Worksheet

Maths tricks trick 19: Factor chains for multiplying · Set 862 · 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. 1.43 × 12 =
2. 2.25 × 24 =
3. 3.24 × 24 =
4. 4.21 × 18 =
5. 5.32 × 12 =
6. 6.23 × 18 =
7. 7.11 × 16 =
8. 8.32 × 18 =
9. 9.48 × 18 =
10. 10.48 × 14 =
11. 11.23 × 16 =
12. 12.31 × 14 =
13. 13.33 × 18 =
14. 14.15 × 12 =
15. 15.12 × 16 =
16. 16.20 × 16 =
17. 17.16 × 16 =
18. 18.22 × 14 =
19. 19.17 × 16 =
20. 20.18 × 12 =
21. 21.37 × 12 =
22. 22.13 × 15 =
23. 23.29 × 12 =
24. 24.16 × 14 =
25. 25.44 × 24 =
26. 26.49 × 16 =
27. 27.13 × 14 =
28. 28.35 × 15 =
29. 29.18 × 14 =
30. 30.33 × 15 =
31. 31.43 × 18 =
32. 32.45 × 14 =
33. 33.11 × 14 =
34. 34.18 × 18 =
35. 35.44 × 15 =
36. 36.37 × 18 =
37. 37.17 × 18 =
38. 38.40 × 16 =
39. 39.22 × 16 =
40. 40.18 × 16 =

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