Add/Subtract Integers
Multiply/Divide Integers
Add/Subtract Rational Numbers
Multiply/Divide Rational Numbers
Rational Numbers and their Opposites
100

64+(-15)

49

100

(-7)(-12)

84

100

-2.63+3 1/4

0.62 or 31/50

100

-2 2/3 * -4 3/7

11 17/21

100
What is an integer?

Positive and negative whole numbers.

200

-121+(-34)

-155

200

81/-9

-9

200

0.74+ (-3/5)

0.14 or 7/50

200

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

200

What is a rational number?

Positive and negative

Whole number

Fraction

Decimal (repeats or terminates)

300

82-(-14)

96

300

(9)(-20)

-180

300

-1/8 - 0.356

-0.481

300

8/9 รท -1 4/15

-40/57

300

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

400

-17-44

-61

400

-124/-4

31

400

-4 1/2 - (-1.07)

-3.43

400

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

400

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

500

The temperature is 1 degrees Fahrenheit at dusk. It is 13 degrees colder at dawn. What is the temperature at dawn?

-12 degrees

500

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

500

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

500

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

500

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