18. What is the product of -4 and 3?
a. 12
b.-12
19. What is the sum of -522 and 5207
a. 2
b.-2
c. 1042
20. What is the sum of -10 and -207
a. 30
b.-30
c. 33
21. When 9 is added to -8, the answer is
a. 1
b.-1
22. What is 37 subtracted from -957
a. +132
b.-132
23. What is the product of -8 and 37
a.-24
b. 24
24. In 5 times 4 divided by 10 plus 8 minus 7, which numbe
a 10+8
b. 52​