Multiply by 12, 16, 18 and 24 Worksheet

Maths tricks trick 19: Factor chains for multiplying · Set 228 · 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 × 24 =
2. 2.13 × 18 =
3. 3.28 × 16 =
4. 4.46 × 18 =
5. 5.48 × 24 =
6. 6.29 × 24 =
7. 7.14 × 12 =
8. 8.13 × 16 =
9. 9.21 × 16 =
10. 10.12 × 14 =
11. 11.42 × 16 =
12. 12.18 × 16 =
13. 13.32 × 18 =
14. 14.45 × 24 =
15. 15.21 × 14 =
16. 16.16 × 16 =
17. 17.14 × 16 =
18. 18.16 × 18 =
19. 19.49 × 15 =
20. 20.35 × 14 =
21. 21.22 × 14 =
22. 22.19 × 14 =
23. 23.43 × 16 =
24. 24.26 × 12 =
25. 25.18 × 15 =
26. 26.20 × 15 =
27. 27.19 × 12 =
28. 28.29 × 15 =
29. 29.23 × 12 =
30. 30.15 × 12 =
31. 31.19 × 15 =
32. 32.12 × 24 =
33. 33.32 × 24 =
34. 34.21 × 12 =
35. 35.31 × 12 =
36. 36.46 × 16 =
37. 37.32 × 12 =
38. 38.20 × 18 =
39. 39.35 × 24 =
40. 40.11 × 15 =

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