Multiply by 12, 16, 18 and 24 Worksheet

Maths tricks trick 19: Factor chains for multiplying · Set 312 · 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. 1.41 × 18 =
2. 2.31 × 12 =
3. 3.26 × 14 =
4. 4.15 × 24 =
5. 5.37 × 12 =
6. 6.35 × 12 =
7. 7.13 × 24 =
8. 8.17 × 18 =
9. 9.38 × 12 =
10. 10.28 × 16 =
11. 11.17 × 12 =
12. 12.11 × 14 =
13. 13.43 × 18 =
14. 14.14 × 18 =
15. 15.33 × 24 =
16. 16.21 × 24 =
17. 17.44 × 15 =
18. 18.17 × 24 =
19. 19.33 × 16 =
20. 20.25 × 16 =
21. 21.39 × 15 =
22. 22.49 × 12 =
23. 23.38 × 15 =
24. 24.22 × 15 =
25. 25.41 × 15 =
26. 26.17 × 16 =
27. 27.19 × 15 =
28. 28.36 × 14 =
29. 29.19 × 18 =
30. 30.16 × 12 =
31. 31.49 × 14 =
32. 32.47 × 14 =
33. 33.27 × 14 =
34. 34.13 × 15 =
35. 35.19 × 12 =
36. 36.11 × 18 =
37. 37.34 × 14 =
38. 38.15 × 18 =
39. 39.21 × 12 =
40. 40.23 × 24 =

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