Multiply by 12, 16, 18 and 24 Worksheet

Maths tricks trick 19: Factor chains for multiplying · Set 17 · 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. 1.37 × 14 =
2. 2.13 × 18 =
3. 3.36 × 24 =
4. 4.33 × 12 =
5. 5.13 × 15 =
6. 6.30 × 24 =
7. 7.35 × 24 =
8. 8.43 × 15 =
9. 9.37 × 18 =
10. 10.38 × 14 =
11. 11.14 × 18 =
12. 12.48 × 24 =
13. 13.33 × 15 =
14. 14.47 × 12 =
15. 15.12 × 24 =
16. 16.25 × 12 =
17. 17.45 × 24 =
18. 18.15 × 16 =
19. 19.41 × 12 =
20. 20.14 × 24 =
21. 21.43 × 12 =
22. 22.21 × 14 =
23. 23.16 × 24 =
24. 24.13 × 16 =
25. 25.27 × 15 =
26. 26.46 × 12 =
27. 27.12 × 18 =
28. 28.23 × 12 =
29. 29.11 × 12 =
30. 30.46 × 15 =
31. 31.27 × 24 =
32. 32.15 × 15 =
33. 33.11 × 18 =
34. 34.23 × 15 =
35. 35.26 × 15 =
36. 36.14 × 16 =
37. 37.33 × 24 =
38. 38.19 × 24 =
39. 39.46 × 16 =
40. 40.13 × 24 =

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