Multiply by 12, 16, 18 and 24 Worksheet

Maths tricks trick 19: Factor chains for multiplying · Set 200 · 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. 1.33 × 24 =
2. 2.43 × 16 =
3. 3.32 × 14 =
4. 4.43 × 15 =
5. 5.34 × 24 =
6. 6.11 × 16 =
7. 7.23 × 15 =
8. 8.30 × 24 =
9. 9.43 × 12 =
10. 10.40 × 12 =
11. 11.23 × 24 =
12. 12.21 × 16 =
13. 13.41 × 15 =
14. 14.25 × 16 =
15. 15.28 × 24 =
16. 16.38 × 15 =
17. 17.34 × 18 =
18. 18.24 × 16 =
19. 19.16 × 15 =
20. 20.48 × 18 =
21. 21.19 × 12 =
22. 22.48 × 12 =
23. 23.11 × 18 =
24. 24.28 × 14 =
25. 25.49 × 18 =
26. 26.49 × 15 =
27. 27.35 × 12 =
28. 28.15 × 14 =
29. 29.19 × 16 =
30. 30.26 × 18 =
31. 31.21 × 18 =
32. 32.42 × 12 =
33. 33.39 × 18 =
34. 34.20 × 15 =
35. 35.15 × 24 =
36. 36.36 × 15 =
37. 37.45 × 24 =
38. 38.16 × 18 =
39. 39.28 × 15 =
40. 40.44 × 16 =

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