Multiply by 12, 16, 18 and 24 Worksheet

Maths tricks trick 19: Factor chains for multiplying · Set 670 · 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. 1.46 × 15 =
2. 2.13 × 16 =
3. 3.42 × 24 =
4. 4.38 × 12 =
5. 5.14 × 14 =
6. 6.23 × 14 =
7. 7.12 × 24 =
8. 8.42 × 15 =
9. 9.32 × 15 =
10. 10.35 × 16 =
11. 11.16 × 12 =
12. 12.18 × 12 =
13. 13.21 × 16 =
14. 14.21 × 14 =
15. 15.13 × 15 =
16. 16.27 × 14 =
17. 17.21 × 15 =
18. 18.36 × 24 =
19. 19.43 × 12 =
20. 20.31 × 16 =
21. 21.43 × 16 =
22. 22.33 × 15 =
23. 23.38 × 18 =
24. 24.39 × 18 =
25. 25.15 × 15 =
26. 26.30 × 24 =
27. 27.25 × 16 =
28. 28.35 × 14 =
29. 29.25 × 12 =
30. 30.12 × 14 =
31. 31.11 × 16 =
32. 32.29 × 14 =
33. 33.36 × 15 =
34. 34.49 × 14 =
35. 35.20 × 12 =
36. 36.18 × 14 =
37. 37.29 × 16 =
38. 38.22 × 12 =
39. 39.18 × 24 =
40. 40.19 × 16 =

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