Multiply by 12, 16, 18 and 24 Worksheet

Maths tricks trick 19: Factor chains for multiplying · Set 153 · 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. 1.24 × 16 =
2. 2.21 × 24 =
3. 3.17 × 12 =
4. 4.38 × 16 =
5. 5.25 × 18 =
6. 6.48 × 12 =
7. 7.49 × 24 =
8. 8.21 × 16 =
9. 9.36 × 16 =
10. 10.29 × 16 =
11. 11.35 × 14 =
12. 12.23 × 12 =
13. 13.15 × 12 =
14. 14.33 × 14 =
15. 15.13 × 12 =
16. 16.23 × 14 =
17. 17.24 × 18 =
18. 18.18 × 12 =
19. 19.18 × 24 =
20. 20.40 × 14 =
21. 21.39 × 16 =
22. 22.29 × 24 =
23. 23.48 × 15 =
24. 24.18 × 15 =
25. 25.20 × 24 =
26. 26.19 × 14 =
27. 27.20 × 16 =
28. 28.12 × 12 =
29. 29.13 × 16 =
30. 30.21 × 12 =
31. 31.11 × 24 =
32. 32.27 × 18 =
33. 33.17 × 14 =
34. 34.47 × 14 =
35. 35.16 × 14 =
36. 36.25 × 16 =
37. 37.12 × 18 =
38. 38.25 × 14 =
39. 39.28 × 15 =
40. 40.21 × 18 =

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