Add/Subtract Integers
64+(-15)
49
(-7)(-12)
84
-2.63+3 1/4
0.62 or 31/50
-2 2/3 * -4 3/7
11 17/21
Positive and negative whole numbers.
-121+(-34)
-155
81/-9
-9
0.74+ (-3/5)
0.14 or 7/50
Jason spends $2.35 to buy lunch at school. If he buys a lunch on 9 days, how much money would he need to buy lunch?
$21.15
What is a rational number?
Positive and negative
Whole number
Fraction
Decimal (repeats or terminates)
82-(-14)
96
(9)(-20)
-180
-1/8 - 0.356
-0.481
8/9 รท -1 4/15
-40/57
Audrey deposits $27 in her account. Then she makes two withdrawals, one for $15 and one for $12. What is the total change to the balance of Audrey's account?
$0
-17-44
-61
-124/-4
31
-4 1/2 - (-1.07)
-3.43
A boat drops an anchor 17.5 feet to the bottom of a lake. If the anchor falls at a rate of 0.07 feet each second, how long will it take the anchor to reach the bottom of the lake?
250 seconds or 4 minutes and 10 seconds
During a 15-day dry spell, the water level in a lake changed by -2 3/8 inches. What rational number represents the average change in the water level per day?
-19/120
The temperature is 1 degrees Fahrenheit at dusk. It is 13 degrees colder at dawn. What is the temperature at dawn?
-12 degrees
A scuba diver descends 60 feet in 12 seconds. What integers represent the change in the diver's position in feet per second?
-5 feet per second
Doug digs a hole that is 1.7 feet below ground level. He plants a bush that is 3 1/5 feet tall from the bottom of the root to the top branch. How much of the bush is above the ground?
1.5 feet above the ground
A certain plant grows 1 1/6 inches every week. How long will it take the plant to grow 6 1/6 inches?
5 2/7 or 5 weeks and 2 days
Maggie spent $4.05 on cheese and fruit at the farmers market. She bought 1/8 pound of apples, 1/4 pound of pears, and 1.25 pounds of bananas. If fruit all costs $0.80 per pound, how much did Maggie spend on cheese?
$2.75 on cheese