QSA Review

QSA Review

Multiplying Fractions

• Finding a fraction OF a whole number

• Multiply by the top, divide by the bottom

• Split into equal groups and shade groups in

Multiple Choice

Mr. Alexander has 25 students in his class. Two-fifths of them have extra recess. How many students have extra recess?

• 10

• 20

• 25

• 5

Dividing Fractions

• Make sure the total is first (What are you splitting up?)

• Use KCF

• Start with a whole number, end with a whole number

• Start with a fraction, end with a fraction

Multiple Choice

Ava had a sleepover. She had 1/4 of a cake to share equally with 6 people. Which equation matches this situation?

•  $6\ \div\frac{1}{4\ }=24$  

•  $\frac{1}{4}\div\frac{1}{6}=24$  

•  $\frac{1}{4}\div6=\frac{1}{24}$  

•  $6\div\frac{1}{4}=\frac{1}{24}$  

Multiple Choice

Alexander had 8 cups of koolaid. How many 1/5 cups are in this amount of koolaid?

• 45

• 40

• 1/8

• 1/40

Perimeter

• Add ALL sides together

• Make sure every side is labeled so you can add them all

• If the total perimeter is given, you must subtract to find a missing side

Multiple Choice

The Northlake soccer field has a perimeter of 45 yards. If the length is 18 yards, how much is the width?

• 36 yards

• 9 yards

• $4\ \frac{1}{2}$

• $5\ \frac{1}{2}$

Volume

• Finding the space a 3D shape holds inside.

• Multiply l x w x h (3 dimensions, 3 numbers)

• Don't add, thats only for perimeter!

• If the area of the base is already given to you, you just have to multiply by the height!

Multiple Choice

What is the volume?

(Hint: count the length and multiply by the width, then multiply by the layers)

• A

• B

• C

• D

Multiple Choice

Which shape has a volume of 12? (12 total cubes make it up)

• a

• b

• c

• d

Multiple Choice

Hint: 6 x 11 x 3

• a

• b

• c

• d

Geometric Shapes

• Polygon: ANY shape that is straight and closed

• Triangle: 3 sided polygon

• Quadrilateral: 4 sided polygon

Multiple Choice

What do a parallelogram, trapezoid, rectangle, rhombus, and square all have in common?

• They are not polygons because they have curved sides

• They are quadrilaterals because they have 4 sides

• They all have 4 right angles

• They all have 2 pairs of parallel sides

Multiple Choice

Which of the following is a polygon?

• An egg

• A curved skateboard ramp

• A round clock

• A stop sign

Measurement

• Use your blue best friend sheet to figure out what you are multiplying/dividing by

• Big to little --> x

• Little to big --> divide

Multiple Choice

14 feet = ___ yards

• 1 yard 10 feet

• 4 yards 1 feet

• 4 yards 2 feet

• 42 yards

Multiple Choice

18 pints = ____ cups

• 9 cups

• 20 cups

• 36 cups

• 72 cups

Coordinate Plane

• (x,y)

• x coordinate tells you to move right

• y coordinate tells you to move up

• origin (0,0) where the axes intersect

• multiplicative y = ax --- always starts at (0,0)

• additive y = x + a ----never starts at (0,0)

Multiple Choice

y = 3x means multiply the x value by 3 to find the y

• f

• g

• h

• j

Order of Operations

• GMDAS

• Groupings like ( ) or [ ] tell you what to do first

• 3(4) tells you to multiply

• Once you complete all of the multiplication and division inside of the groupings, you complete the addition and subtraction inside of the groupings.

• Then you complete the multiplication and division outside of the groupings, followed by the adding and subtracting outside of the groupings.

Multiple Choice

Start by lining up the decimals to add

• f

• g

• h

• j