Use of Positive Rational Numbers
Chris and Jeff sold 15.5 pounds of trail mix. They sold the trail mix for $3.98 per pound. How much did they collect? Explain.
$61.69
90 degree angle!
Perpindicular to each other
Write each expression using an exponent:
1) 8 x 8 x 8 x 8 x 8 x 8
2) 9
3) 10 x 10 x 10
4) 2 x 2 x 2 x 2 x 2
8^6
Solve for the variable:
1) d + 10 = 25
2) 7x = 84
3) c - 8 = 54
15
12
62
There are 20 students in the class and 30% of them are girls. How many girls are in the class?
6 girls
Gabriel needs “d” more dollars to buy a new video game console that costs $156.75. He has saved $98.26. How much more money does Gabriel need to buy the game console?
$58.49
Formula for finding the surface area of a rectangular prism?
2(lw + wh + lh)
2 large watermelons with honey look horrible
Find the GCF:
1) 30, 100
2) 12, 24
10
12
Solve for x.
1) 4/2 x = 6
2) x/7 = 116
3
812
On Tuesday, 620 students attended a middle school. A survey was taken and stated 341 students brought lunch to school. What percent of students brought lunch?
about 55%
Find the product: 5/4 x 1 1/12
1 17/48
What is the area, in square centimeters, of the isosceles trapezoid?
base = 10
base = 16
height = 15
195 cm²
Find the LCM:
4) 4, 9
5) 8, 10
36
40
Write an inequality for each situation:
1) Up to 10 people, p, may sit in this row.
2) The distance, d, is at least 6 miles.
p less than or equal to 10
d greater than or equal to 6
The number 4 is 16% of what number?
25
A model train is 15 3/4 inches long. Each car in this train is 2 5/8 inches in length. How many cars are in the train?
6 cars
What is the volume, in cubic inches, of the cube?
side length = 2 1/2
15.625 in^3
Evaluate the expression:
9 - (3² x 2) + 8
-1
Write an inequality for each situation:
3) The time it takes to get to my house is longer than 3 hours.
4) The value of the hat is less than $10
t > 3
v < 10
A video game originally costs $60. It is on sale for 25% off.
How much is the discount, and what is the sale price?
discount = $15
sale price = $45
Maria needs “d” more dollars to buy a new scrapbook that costs $8.35. She has $4.88. How much more money does Maria need to buy the scrapbook?
3.47
A rectangular box has a length of 5 cm, a width of 3 cm, and a height of 4 cm.
What is the surface area of the box?
94cm²
Write an algebraic expression to represent each situation.
1) 22 less than 6 times a number
2) 4 times the sum of M and 7
6x - 22
4(m+7)
Identify the independent and dependent variables:
1) The distance traveled, d, and the speed, s.
2) The amount of money you spent, s, and how much you have left, m.
independent = speed , dependent = distance
independent = amount spent , dependent = money left
A plant was 50 cm tall. After 1 month, it grew by 20%.
What is the new height of the plant?
60cm