Multiply by 12, 16, 18 and 24 Worksheet

Maths tricks trick 19: Factor chains for multiplying · Set 70 · 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. 1.47 × 12 =
2. 2.41 × 15 =
3. 3.33 × 12 =
4. 4.23 × 12 =
5. 5.17 × 18 =
6. 6.12 × 15 =
7. 7.30 × 15 =
8. 8.48 × 18 =
9. 9.15 × 24 =
10. 10.31 × 18 =
11. 11.27 × 14 =
12. 12.12 × 14 =
13. 13.42 × 14 =
14. 14.27 × 16 =
15. 15.46 × 16 =
16. 16.13 × 14 =
17. 17.33 × 14 =
18. 18.13 × 16 =
19. 19.49 × 14 =
20. 20.47 × 14 =
21. 21.11 × 24 =
22. 22.23 × 18 =
23. 23.14 × 24 =
24. 24.37 × 18 =
25. 25.17 × 16 =
26. 26.31 × 14 =
27. 27.14 × 15 =
28. 28.32 × 12 =
29. 29.19 × 24 =
30. 30.16 × 14 =
31. 31.34 × 15 =
32. 32.18 × 24 =
33. 33.41 × 14 =
34. 34.47 × 24 =
35. 35.35 × 12 =
36. 36.32 × 18 =
37. 37.18 × 12 =
38. 38.19 × 18 =
39. 39.29 × 24 =
40. 40.21 × 12 =

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