expressions& equations
What is the value of the expression: 3x when x=4?
A. 7
B. 10
C. 12
D. 16
C. 12
How many sides does a hexagon have?
A. 5
B. 6
C. 7
D. 8
6
Liam buys 3 notebooks for $2 each. Which expression models the total cost?
A. 3+2
B. 3×2
C. 3−2
D. 2÷3
B. 3x2
What is the ratio of 4 apples to 2 oranges? (SIMPLIFY)
A. 2:4
B. 1:2
C. 2:1
D. 4:4
C. 2:1
What is the opposite of -7?
A. 0
B. 7
C. -1
D. -8
B. 7
Evaluate: 5+2x
when x=3
Answer: 5+2(3)=11
What is the area of a rectangle with length 5 cm and width 3 cm?
15cm2
Write an expression to show the total cost of x pens if each pen costs $1.50.
1.5x
Write the ratio of 6 dogs to 9 cats in simplest form.
2:3
Is -3 greater than 2? Explain.
No, because -3 is to the left of 2 on the number line.
Which equation represents “7 more than twice a number is 19”?
A. 2x+7=19
B. 7x+2=19
C. x+7=19
D. 2x−7=19
A. 2x+7=19
A triangle has a base of 8 cm and a height of 6 cm. What is its area?
24 cm2
Olivia has $30. She spends $x on lunch. Which expression shows how much money she has left?
A. 30+x
B. x−30
C. 30x
D. 30−x
30-x
If 3 pencils cost $1.50, how much do 6 pencils cost?
A. $2.00
B. $3.00
C. $4.50
D. $6.00
B. $3.00
Which number is closest to zero?
A. -1
B. -0.5
C. -2
D. -5
B. -0.5
Solve: 3x−4=11
x=5
What is the area of a rectangle with length 10 cm and width 9 cm?
90 cm2
The perimeter of a rectangle is modeled by 2l+2w. If l=6, w=4, what is the perimeter?
2(6)+ 2(4)= 20
A map uses a scale of 1 inch = 5 miles. How many miles is a road that is 3 inches long on the map?
15 miles
Plot the following numbers on a number line: -4, 0, 3, -1
-4, -1, 0, 3 from left to right
Which of the following is equivalent to 4(x+3)
A. 4x+3
B. 4x+12
C. x+12
D. 4x+9
4x+12
A triangle has a base of 5 cm and a height of 7 cm. What is its area?
17.5 cm2
A recipe calls for 2 cups of sugar per cake. Write an expression for sugar needed to make cakes. If c=3.5, how much sugar is needed?
2c= 7 cups
Solve for ¾=x/8
x=6
Order these from least to greatest: -½, -0.25, -1
-1, -½, -0.25