Answer:
12. B
13. B
14. C
15. C
16. D
17. C
18. C
19. C
20. D
21. B
Explanation:
12.
16/8 = 2
13.
12 - 4 = 8
12 - 6 = 6
(8 + 6)/2 = 7
15. 2000 x 1000 = 2,000,000
16. 999 + 9999 = 10,998
17.
24/4 = 6
6 x 5 = 30
18.
6 x 3 = 18
19. July 18th
20.
728 cannot divide evenly by 72
21.
1111 x 1111 = 1,234,321
biggest odd number is 3