Integers
(-7) + 3
-4
3/4 + 5/6
19/12 OR 1 7/12
4.7 + 2.3
7
The temperature was 6oC in the morning. By the afternoon, it had decreased by 8oC. What was the afternoon temperature?
-2oC
What is always true about the absolute value of a number?
It's positive
(-8) - 5
-13
3/5 - 7/10
- 1/10
8.5 - 12.7
-4.2
A submarine is 45 ft below sea level. If it rises 18 ft, what is its new position relative to sea level?
-27 ft OR 27 ft below sea level
Name 3 types of rational numbers.
-12 + 7 - (-4)
-1
7/6 OR 1 1/6
(-3.75) + 6.4
2.65
During a drought, the local lake was 3 1/6 feet below its normal level. Two weeks later, the water level had dropped an additional 1 5/9 feet. What was the lake's water level after two weeks relative to its normal level?
-4 13/18 ft OR 4 13/18 ft below normal level
True or False: When you subtract a number, the answer always becomes smaller.
False
15 - (-8) + (-12)
11
1 5/8 - (- 2 7/12)
4 5/24
12.6 - (-4.85) + (-7.3)
10.15
Marcus has $24.50 in his account. He spends $31.75 on a new book and $3.15 on a candy bar. He also deposits $5 that he got for his birthday. What is his new account balance?
- $5.40
True or False: Opposite numbers always have the same absolute value.
True
-18 - (-7) - |-9| + (-12)
-32
1/4
-15.72 - (-8.95) - |-3.6| + (-4.28)
-14.65
A hiker starts at an elevation of 285 ft. She descends 375.5 ft, climbs 218.75 ft, and descends another 23.5 ft. What is her final elevation?
104.75 ft
|-12 - (-7) + (-9) - (-4)| = ?
10