9. The sum of an integer and its opposite is
A. 1
B. -1
C. 0
D. 2
10. Which of the following numbers is arranged in descending order (highest to lowest)? *
A. 9,7,4,-72, -87, -99
B. 1,3,4,-8,-9, -10
C. -16, -13,-9, -7, -3,0
D. 2, 3, 4, 6, 8, 9
11. Which of the following numbers is arranged in increasing order? *
A. 8, 7, 6, 5, 4, 3
B. -16, -12,-9, 0, 3, 7
C. 1, 5, 14, -18, -23, -57
D. -1,-2,-3,-4,-5,-6
12. They are also known as counting numbers or natural numbers
A. negative integers
B. positive integers
C. 0
D. whole numbers
13. Given [x] + 17 = 48, find x. *
A. x=31 or x= -31
B. x=31
C. x=65 or x= -65
D. x=65
14. What integer is 5 units to the left of 2?
A.7
B. -7
C.3
D. -3
15. Which integer is bigger. -9 or -12? *
A. -9
B. 12
C. -12
D. they are equal
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Answer:
9.B
10.D
11.B
12.D
13.B or D
14.B
15.D