Expressions and Equations
- 6x = 30
x = - 5
Which equation would you use to find the area of a circle?
pi.r2
Scaled copy is ______.
a) shapes that are the same size but different shapes
b) shapes that are the same shape but different sizes
c) a shape that look distorted from the original
b) shapes that are the same shape but different sizes
What is surface area?
a) a 3D shape
b) The sum of all the areas of all the surfaces of a 3D shape
c) the amount of stuff that can fit in an object
b) The sum of all the areas of all the surfaces of a 3D shape
Natalie buys organic almonds priced at $77 from the grocery store. How much did she pay the cashier, if she received $23 in change?
$100
x/3 = 4
x = 12
Which equation would you use to find the circumference?
πd or 2πr
A scaled copy is a copy of a figure where every length in the original figure is ______ by the same number.
multiplied
What does the "B" in the volume formula V = B x h stand for?
Area of the base
John was gifted a pack of crayons. He gave 13 crayons to his friend Rhea and was left with 11 crayons. How many crayons did the pack contain?
24 crayons
Simplify the expression: 6 + 2(7x - 3)
14x
If the radius of a circle is 5 ft, what is the area?
78.5ft2
If the side AB is 7cm and the scaled copy is 28cm; what is the scale factor?
4
Find the surface area of a rectangular prism with lengths 2cm, 3cm and 4cm.
52cm2
The larger of two numbers is 12 more than the smaller number. If the sum of the two numbers is 74, find the two numbers.
a) 31 and 43
b) 12 and 24
c) 51 and 63
a) 31 and 43
- 4x - 14 = 6
x = - 5
If the diameter is 42ft, what is the circumference of the circle?
131.88 ft
How do we find a SCALE FACTOR using corresponding sides?
a) ORIGINAL side divided by SCALED COPY side
b) SCALED COPY side times ORIGINAL side
c) SCALED COPY side divided by ORIGINAL side
c) SCALED COPY side divided by ORIGINAL side
How many faces are on the rectangular prism?
6
The length of a rectangle is 3 inches more than its width. If the perimeter is 42 inches, find the dimensions of the rectangle.
a) 3in by 14in
b) 10in by 11in
c) 9in by 12in
c) 9in by 12in
Solve: 5 (2x - 9) + 3 = - 7
x = 3.5
The area of a circle is 153.86 sq. meters when 𝞹 is 3.14. What is the circumference of that same circle?
43.96m
Which measurements below show a scale factor of 1/3?
a) 4in correspond with 12in
b) 12ft correspond with 4ft
c) 4m correspond with 16m
b) 12ft correspond with 4ft
A triangular-based pyramid has __ faces, __ vertices and ___ edges.
A triangular-based pyramid has 4 faces, 4 vertices and 6 edges.
Trevor takes up a test at school and completes it in an hour. The test has two sections. If he takes 35 minutes to complete the first section, how much time does he have left to complete the second section?
25 minutes