Multiply by 12, 16, 18 and 24 Worksheet

Maths tricks trick 19: Factor chains for multiplying · Set 427 · 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. 2.12 × 18 =
3. 3.20 × 16 =
4. 4.37 × 24 =
5. 5.30 × 12 =
6. 6.36 × 14 =
7. 7.22 × 12 =
8. 8.11 × 18 =
9. 9.46 × 18 =
10. 10.42 × 24 =
11. 11.22 × 15 =
12. 12.41 × 18 =
13. 13.41 × 14 =
14. 14.21 × 24 =
15. 15.45 × 24 =
16. 16.48 × 24 =
17. 17.42 × 18 =
18. 18.26 × 16 =
19. 19.32 × 15 =
20. 20.48 × 15 =
21. 21.18 × 15 =
22. 22.22 × 24 =
23. 23.49 × 18 =
24. 24.26 × 12 =
25. 25.27 × 12 =
26. 26.48 × 14 =
27. 27.25 × 15 =
28. 28.15 × 16 =
29. 29.14 × 12 =
30. 30.42 × 15 =
31. 31.21 × 14 =
32. 32.17 × 14 =
33. 33.38 × 15 =
34. 34.29 × 12 =
35. 35.16 × 18 =
36. 36.17 × 16 =
37. 37.15 × 18 =
38. 38.42 × 12 =
39. 39.19 × 24 =
40. 40.24 × 18 =

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