Multiply by 12, 16, 18 and 24 Worksheet

Maths tricks trick 19: Factor chains for multiplying · Set 464 · 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. 1.11 × 16 =
2. 2.28 × 12 =
3. 3.11 × 14 =
4. 4.12 × 16 =
5. 5.24 × 16 =
6. 6.15 × 24 =
7. 7.21 × 24 =
8. 8.43 × 24 =
9. 9.21 × 16 =
10. 10.32 × 12 =
11. 11.36 × 15 =
12. 12.29 × 24 =
13. 13.11 × 15 =
14. 14.15 × 18 =
15. 15.20 × 24 =
16. 16.31 × 18 =
17. 17.20 × 14 =
18. 18.30 × 14 =
19. 19.38 × 15 =
20. 20.27 × 18 =
21. 21.34 × 14 =
22. 22.13 × 18 =
23. 23.22 × 15 =
24. 24.12 × 12 =
25. 25.39 × 16 =
26. 26.20 × 18 =
27. 27.36 × 24 =
28. 28.20 × 15 =
29. 29.22 × 12 =
30. 30.40 × 15 =
31. 31.12 × 15 =
32. 32.32 × 14 =
33. 33.47 × 18 =
34. 34.18 × 15 =
35. 35.33 × 24 =
36. 36.13 × 16 =
37. 37.14 × 18 =
38. 38.39 × 12 =
39. 39.44 × 12 =
40. 40.41 × 12 =

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