Word problems with integers
Steve’s temperature was 102°F. Two hours later, it dropped by 3°F. What is his temperature now?
99°F
2(3x - 5)
(6x - 10)
Find the median of the following numbers: 3, 7, 9, 2, 5.
Median = 5
Find the additive inverse of: 476
476 + (–476) = 0 = -476
What is the additive inverse of 4/5?
-4/5.
An elevator is on the 20th floor. It goes down 11 floors and then up 5 floors. What floor is the elevator on now?
14th floor
4(2x + 3) - 5
(8x + 7)
Find the mode of the following numbers: 4, 1, 2, 4, 3, 4, 2.
Mode =4
Verify a + (b + c) = (a + b) + c for :a = 34, b = 90, c = –1
a = 34, b = 90, c = –1 = 123
What is the sum of multiplicative inverse and the additive inverse of 2?
= -1.5
A diver is 200 feet below sea level. He ascends at a rate of 25 feet per minute. How deep was the diver 10 minutes ago?
450 feet below sea level.
5(2x - 3) + 4(x + 2)
14x - 7
Find the mean, median, and mode of the following numbers: 12, 15, 12, 18, 20, 15, 12.
Mean ≈ 14.86 Median = 15 Mode: 12
Evaluate using properties: 89 – 58 + 28 – (–32)
=91
Find the reciprocal of the following rational numbers. (a) 6/10 (b) 126/17 (c) 89/188
(a) 10/6. (b) 17/126. (c) 188/89.
The temperature is 5°F outside. It will drop by 17°F in the next six hours. What will the temperature be then?
-12°F
3(2x + 4) - 2(3x - 5) + 6
(6x + 12 - 6x + 10 + 6)
A student scored the following marks in 7 tests: 78, 85, 92, 85, 88, 92, 95. Find the mean, median, and mode.
Mean ≈ 87.86 , Median = 88, Mode = 85 and 92
Evaluate using properties: 193 + 208 – {29 – (367)
=5
Find the rational number that should be added to ⅜ to get the number -1/24.
-5/12.
Josie has $47 in her checking account. She writes a check for $55, which causes an overdraft. The bank charges her a $30 overdraft fee. Additionally, she deposits a paycheck of $200 the following day.
What is her account balance after all these transactions?
Answer: $162
3(2x+4)−5(3x−2)=2(x+6)−7(x−1)+14
−2.75.
Find, mean, median, and mode. 4, 5, 3, 6, 5, 8, 7, 5, 4, 5, 3, 6, 5, 8, 7, 5, 4, 5, 3, 6, 5, 8, 7 ,5
Mean: 5.63 Median: 5 Mode: 5