Question

13. What is the inverse operations of subtraction?
A. multiplication
B. division
C. addition
D. subtraction
14. Choose ALL of the words below that mean "equal."
A. is
B. the same as
C. of
D. equal to
E. increased
F. identical to
15. Sam needs to make 156 cookies for a school bake sale. How many dozens does he need to make? (1 dozen = 12)
A. 12
B. 168
C. 13
D. 144
16. What is the goal when solving an equation?
A. use inverse operations
B. isolate the variable
C. add and subtract
D. get the variable on the right

Answer 1

17. Solve: x + 15 = 8
A. x = 7
B. x = 23
C. x = -23
D. x = -7
18. Solve: y - 12 = 34
A. y = 46
B. y = 22
C. y - 12 + 12 = 34 + 12
D. y = 34
19. Solve: 72 + c = 55
A. c = 127
B. c = 17
C. c = -17
D. none of the above