Multiply by 12, 16, 18 and 24 Worksheet

Maths tricks trick 19: Factor chains for multiplying · Set 397 · 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. 1.38 × 24 =
2. 2.31 × 16 =
3. 3.23 × 15 =
4. 4.44 × 15 =
5. 5.11 × 12 =
6. 6.11 × 15 =
7. 7.33 × 14 =
8. 8.21 × 24 =
9. 9.12 × 14 =
10. 10.21 × 12 =
11. 11.24 × 24 =
12. 12.26 × 18 =
13. 13.35 × 14 =
14. 14.21 × 15 =
15. 15.38 × 14 =
16. 16.16 × 18 =
17. 17.49 × 15 =
18. 18.39 × 14 =
19. 19.48 × 18 =
20. 20.24 × 16 =
21. 21.31 × 15 =
22. 22.32 × 15 =
23. 23.31 × 24 =
24. 24.42 × 16 =
25. 25.21 × 14 =
26. 26.43 × 14 =
27. 27.12 × 24 =
28. 28.17 × 18 =
29. 29.37 × 14 =
30. 30.42 × 12 =
31. 31.14 × 15 =
32. 32.39 × 18 =
33. 33.35 × 18 =
34. 34.35 × 24 =
35. 35.43 × 24 =
36. 36.36 × 12 =
37. 37.28 × 24 =
38. 38.49 × 16 =
39. 39.18 × 18 =
40. 40.28 × 15 =

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