Multiply by 12, 16, 18 and 24 Worksheet

Maths tricks trick 19: Factor chains for multiplying · Set 868 · 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. 1.23 × 12 =
2. 2.22 × 14 =
3. 3.27 × 24 =
4. 4.18 × 16 =
5. 5.22 × 15 =
6. 6.14 × 24 =
7. 7.44 × 15 =
8. 8.32 × 18 =
9. 9.46 × 16 =
10. 10.40 × 12 =
11. 11.42 × 16 =
12. 12.20 × 16 =
13. 13.14 × 18 =
14. 14.20 × 15 =
15. 15.46 × 12 =
16. 16.27 × 12 =
17. 17.35 × 15 =
18. 18.19 × 18 =
19. 19.41 × 12 =
20. 20.23 × 18 =
21. 21.41 × 16 =
22. 22.21 × 18 =
23. 23.18 × 24 =
24. 24.15 × 15 =
25. 25.23 × 16 =
26. 26.28 × 16 =
27. 27.27 × 18 =
28. 28.33 × 16 =
29. 29.42 × 15 =
30. 30.29 × 18 =
31. 31.25 × 12 =
32. 32.30 × 18 =
33. 33.34 × 12 =
34. 34.27 × 16 =
35. 35.11 × 24 =
36. 36.31 × 14 =
37. 37.15 × 16 =
38. 38.13 × 18 =
39. 39.17 × 12 =
40. 40.46 × 14 =

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