Sagot :
Answer:
15. A
16. B
17. C
18. D.
19. B.
20. A.
Step-by-step explanation:
15. If you add a negative number to a positive number it's unlike sign so you gotta subtract it
16. The answer is actually there
17. 890 + 102
18. 50 x 15 = 750 x 40
19. 25-11=14
14+17=31
31+18=49
20. Add -5, -8 and -11 = -24
-24÷3 = -8
hope it helps!