II. C. Perform the indicated operations in the mathematical expressions. 11.9+ 3+ 10 - 4 =
12.6 x 7 +36 + 12 =
13. 81 + 9 x 25 + 10 -3 =
14. 14+ 2-4 + 3x 2 =
15.5+3 x 9 - 16 + 4 =
16. (12 + 5) x 3 =
17.6 x 4 - (6 + 8) =
18.24 + 2⁴+9 =
19.7+(4×7) +5²=
20.(15÷3)+(9×12)=
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Answer:
11. 18
12. 90
13. 313
14. 14
15. 20
16. 51
17. 10
18. 49
19. 60
20. 540
Explanation:
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