Multiply four digits by two digits

Multiply by the ones, then the tens, then add.

1. 2,538 × 20 =
2. 2,750 × 12 =
3. 2,698 × 13 =
4. 2,516 × 19 =
5. 2,349 × 15 =
6. 1,867 × 15 =
7. 1,103 × 14 =
8. 1,746 × 21 =
9. 2,099 × 12 =
10. 4,674 × 19 =
11. 2,825 × 17 =
12. 2,456 × 32 =
13. 1,849 × 19 =
14. 1,961 × 28 =
15. 3,135 × 99 =
16. 7,485 × 79 =
17. 4,359 × 54 =
18. 8,333 × 30 =
19. 3,423 × 27 =
20. 6,952 × 91 =