Basic
Integers
Integers
Arrange the integers in descending order:
-9, 6, 0, -7 , 2
6, 2, 0, -7, -9
An elevator starts on the 6th floor. It goes down 9 floors. On what floor does the elevator stop?
-3
Bryan gets on an elevator at the 35th floor. The elevator goes down 17 floors then up 9 floors. At what floor does it finally stop?
27th floor
Which is the set-builder form of {1, 2, 3, 4, 5}?
A. {x | x > 5}
B. {x | x < 5}
C. {x | 1 ≤ x ≤ 5}
D. {x | x is even}
C. {x | 1 ≤ x ≤ 5}
In a class of 40 students:
How many students like only apples?
A. 14. B. 22. C. 8. D. 10
A. 14
What is the product of (-7) (-8)?
56
A hiker is at an elevation of 120 meters above sea level. He descends 185 meters. What is his new elevation?
Solution:
120 + (-185) = -65
What is the sum of (-3)+(-19)?
-22
Which is the set of prime numbers less than 10 in roster form?
A. {1, 2, 3, 5, 7}
B. {2, 3, 5, 7}
C. {2, 4, 6, 8}
D. {3, 5, 7, 9}
B. {2, 3, 5, 7}
In a school, 50 students joined sports clubs:
How many students joined basketball only?
A. 20 B. 30 C. 15 D. 10
A. 20
What is the absolute value of -24?
24
Find the sum of (–12) + (+5).
+7
Which is the set-builder form of {2, 3, 5, 7}?
A. {x | x is even}
B. {x | x < 10}
C. {x | x is a prime number less than 10}
D. {x | x is odd}
C. {x | x is a prime number less than 10}
Among 35 students:
How many students like either Mathematics or Science?
A. 42 B. 28 C. 35. D. 13
20 + 15 - 7 = 28
Answer: B. 28
What is the sum of the smallest whole number and the smallest counting number?
0 + 1 = 1
Ans. 1
Using the Gaussian method, find the sum of the first 10 negative natural numbers.
-55
In a golf tournament, Joey got a score of +11 and Melissa got a score of –5. What was their combined score?
What is +6
A hiker is at an elevation of 120 meters above sea level. He descends 185 meters. What is his new elevation?
120 + (-185) = -65
n a group of 60 students:
How many students read neither comics nor storybooks?
A. 9 B. 15 C. 21 D. 25
Solution:
Students who read comics or storybooks:
35 + 28 - 12 = 51
Students who read neither:
60 - 51 = 9
Answer: A. 9
Name all pairs of integers that have a sum of -3.
+5, +6, +7, +9, -8, -9, -10, -12
What is (+5,-8) (-9,+6) (-10, 7), (+9,+12)
The price of a stock was $38 on Monday morning. The value of the stock went up $3, down $5, down $1, up $2, and up $4 during the 5 days of the week. Find the value of the stock at the end of the week.
41
Write the next two terms in the pattern. +16, +9, +2, –5, ...
What is -12 and -19