Multiply by 12, 16, 18 and 24 Worksheet

Maths tricks trick 19: Factor chains for multiplying · Set 441 · 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. 2.48 × 16 =
3. 3.31 × 12 =
4. 4.46 × 16 =
5. 5.40 × 12 =
6. 6.17 × 16 =
7. 7.13 × 14 =
8. 8.16 × 24 =
9. 9.35 × 16 =
10. 10.19 × 16 =
11. 11.48 × 14 =
12. 12.49 × 12 =
13. 13.22 × 15 =
14. 14.22 × 24 =
15. 15.25 × 24 =
16. 16.32 × 12 =
17. 17.12 × 12 =
18. 18.12 × 18 =
19. 19.36 × 18 =
20. 20.48 × 24 =
21. 21.49 × 18 =
22. 22.43 × 16 =
23. 23.38 × 12 =
24. 24.36 × 15 =
25. 25.34 × 15 =
26. 26.35 × 14 =
27. 27.34 × 18 =
28. 28.43 × 18 =
29. 29.47 × 24 =
30. 30.22 × 12 =
31. 31.49 × 15 =
32. 32.11 × 14 =
33. 33.30 × 18 =
34. 34.23 × 18 =
35. 35.44 × 12 =
36. 36.29 × 12 =
37. 37.41 × 16 =
38. 38.26 × 24 =
39. 39.35 × 15 =
40. 40.18 × 24 =

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