Multiply by 12, 16, 18 and 24 Worksheet

Maths tricks trick 19: Factor chains for multiplying · Set 223 · 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. 1.15 × 12 =
2. 2.17 × 14 =
3. 3.22 × 16 =
4. 4.34 × 14 =
5. 5.43 × 12 =
6. 6.31 × 14 =
7. 7.21 × 14 =
8. 8.37 × 12 =
9. 9.42 × 18 =
10. 10.14 × 18 =
11. 11.16 × 18 =
12. 12.11 × 15 =
13. 13.19 × 14 =
14. 14.42 × 16 =
15. 15.41 × 24 =
16. 16.14 × 24 =
17. 17.47 × 16 =
18. 18.35 × 14 =
19. 19.11 × 12 =
20. 20.38 × 14 =
21. 21.17 × 24 =
22. 22.43 × 14 =
23. 23.18 × 24 =
24. 24.17 × 12 =
25. 25.46 × 24 =
26. 26.19 × 12 =
27. 27.42 × 24 =
28. 28.27 × 15 =
29. 29.38 × 18 =
30. 30.16 × 16 =
31. 31.47 × 24 =
32. 32.35 × 16 =
33. 33.39 × 12 =
34. 34.16 × 12 =
35. 35.33 × 18 =
36. 36.18 × 12 =
37. 37.34 × 24 =
38. 38.26 × 18 =
39. 39.29 × 14 =
40. 40.28 × 16 =

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