CRCT Review!

Choose 2 or 3 Topics you would

like to review before the

Milestone• Greatest

Common Factor

• Least Common Multiple

• Dividing Fractions

• Adding and Subtracting Decimals

• Multiplying and Dividing Decimals

• Long Division

• Unit Rates

• Ratios

• Writing Expressions using key words

• Order of Operations

• Substitution

• Solving Equations

• Solving Inequalities

• Area of Triangle, Rectangle, Parallelogram, or Trapezoid

• Volume of Rectangular Prisms

• Surface Area/Nets

• Mean, Median, and Mode

• Range

• Box and Whisker Plots

• Coordinate Plane

• Putting Rational Numbers in Order

• Absolute Value

• Creating Polygons on the Coordinate Plane

Mean, Median, and Mode

• Use the data set to answer the following questions: 6, 5, 14, 9, 7, 12, 17

• What is the median?

• What is the mean?

• What is the mode?

Answer

• Median: 9

• Mean: 10

• Mode: No mode

• If you had trouble with that, watch the following video!

http://www.khanacademy.org/math/cc-sixth-grade-math/cc-6th-data-statistics/cc-6th-statistics/v/mean-median-and-

mode

Substitution

• If x = 5 and y = 7 then 3x + y would equal what?

• Remember to place numbers in parentheses when you substitute!

3(5) + 7 = 15 + 7 = 22

Volume

How many cubes are inside the rectangular prism?

A) 21 cubes

B) 28 cubes

C) 36 cubes

D) 42 cubes

Area

4 cm.

----

----

----

----

----

----

----

----

----

-6 cm.

Area= 12 cm2

----

----

----

----

----

----

-

12 m

4.8 m

Area= 57.6 m2

http://www.brainpop.com/math/geometryandmeasurement/areaofpolygons/

Surface Area• What is the surface area of the following

shape? Use the formula:

SA = 2(ab) + 2(bc) + 2(ac)

Choose which sides are you’re a, b, and c first.

SA = 324

Decimals

The table shows the average baseball ticket price for three American cities.

How much more expensive is it to buy a ticket in New York than in Atlanta?

Location Average Price

Atlanta $14.42

New York $28.59

Los Angeles $19.67

$14.17

http://www.brainpop.com/math/numbersandoperations/decimals/

Operations with Decimals

• Dividing: If there is a decimal on the outside of the division sign, you must move it first before you can start dividing.

• 575.82 ÷ 6.3• 91.4

• Multiplying: Multiply like normal and then count the decimal places in your problem and move the decimal to the right in your answer

• 7.85 3.4• 26.69

Unit Price

• If three dozen cookies cost $9, what is the unit cost?

• A) $0.25

• B) $0.50

• C) $3.00

• D) $4.00

Money goes on the top of your

rate and the total number of

cookies will go on the bottom. Then

you have to divide.

Writing Expressions

• Which of the expressions represents the statement, "22 more than a number squared decreased by 12"?

• A) 22 + x2 - 12

• B) 22 - x2 - 12

• C) 22 - x2 + 12

• D) x2 - 22 - 12

http://learnzillion.com/lessons/465-read-and-write-an-algebraic-expression-containing-a-variable

Pick out your key words first!

Equations

The product of two numbers is 48, and one of the numbers is 12. Find the other number.

Which equation can be used to solve this problem?

A) 48x = 12

B) 12x = 48

C) x/12= 48

D) x/48= 12

Order of Operations

62 – (3 + 27 ÷9)

• 30

2(3 + 9) – 10

• 14

5 + (10 + 3 • 4) – 6

• 21

ParenthesesExponentsMultiply ORDivideAdd ORSubtract

http://www.youtube.com/watch?v=OWyxWg2-LTY&edufilter=fU9N1e_9JCp4rAvc4PaVkQ

Nets

• James cut this shape from a piece of paper. He is going to fold the shape along the dotted lines. What solid will James create?

• A) octahedron

• B) tetrahedron

• C) triangular prism

• D) triangular pyramid

http://www.brainpop.com/math/geometryandmeasurement/polyhedrons/preview.weml

Greatest Common Factor

• You can use the ladder method or the rainbow method.

• Remember: factors are the numbers you can multiply together to get a larger number (Ex. 1, 2, 3, 6 are the factors of 6)

• What is the GCF of 24 and 16?

• 8

Least Common Multiple

• List all the multiples of each number until you find the first multiple they have in common

• Multiple: think about the multiplication table (Ex. 5: 5, 10, 15, 20…)

• What is the LCM of 8 and 10?

• 40

Dividing Fractions

• Keep, Change, Flip and then just multiply straight across and simplify if necessary

•⅞ ÷ ⅖

• 2 3/16

•⅔ ÷ ½

•1 1/3

Inequalities• greater than >, less than <, greater than or

equal to ≥, less than or equal to ≤

• To solve an inquality, you solve it exactly like an equation (WYDTOSDTTO).

• 3x ≥ 27• x ≥ 9; any number 9 or greater

• To write an inequality from a statement, you must choose the key words and pick which symbol matches the key word• The cost of the shirt will be no more than

$10.

• s ≤ 10

Solving Equations

• Use inverse operations!

• What you do to one side, do to the other!

• x – 10 = 17• x = 27

• y/8 = 9• y = 72

• 4c = 24• c = 6

Converting Fractions, Decimals, and Percentages

• Fraction to decimal: Top dog goes in the house (numerator inside the division sign, denominator outside)

• Decimal to percent: Move the decimal 2 times to the right

• Percent to decimal: Move the decimal 2 times to the left

Helpful Websites

• https://www.brainpop.com/math/ • Login: Username = lumpkin, password

= indians

• https://www.khanacademy.org/math/cc-sixth-grade-math

• USA Test Prep