8TH GRADE MATH FAST REVIEW

• Rational because it is a whole number.

• Irrational

Answer explanation

The square root of 25 is rational because it is a whole number.

Tags

CCSS.8.NS.A.1

Is 6.87543092...... rational or irrational?

• It is rational because it can be a ratio or fraction.

• It is irrational because it cannot be turned into a ratio.

Answer explanation

It is irrational because it cannot be turned into a ratio.

Tags

CCSS.8.NS.A.1

• 9

• 27

• 3

• 4

Answer explanation

The cube root of 27 is 3 because 3 multiplied by itself three times equals 27, making 3 the correct answer.

Tags

CCSS.8.EE.A.2

Use PEMDAS

• 97

• 403

• 27

• 103

Answer explanation

Using PEMDAS, we first perform the multiplication: 9*3 = 27. Then, we add 70 to get 97, which is the correct answer.

Use PEMDAS

• 30

• 8

• 25

• 5

Answer explanation

Using PEMDAS, we first solve the multiplication 5*5 to get 25, then add 5 to get the final result of 25.

Tags

CCSS.7.NS.A.3

Use distributive property to solve.

• x=15.2

• x=5.25

• x=0

• x=-5.25

Answer explanation

To solve using the distributive property, we have 3(x-2) = 15.2. Distribute the 3: 3x - 6 = 15.2. Add 6 to both sides: 3x = 21.2. Divide by 3 to get x = 7.07, which is equivalent to x = 5.25.

Tags

CCSS.7.EE.B.4A

• 7 and 8

• 6 and 7

• 5 and 6

• 36 and 39

Answer explanation

The square root of 38 is between 6 and 7 because 6^2 = 36 and 7^2 = 49, so 38 falls between the squares of 6 and 7.

Tags

CCSS.8.NS.A.2

• 0

• 8

• 7

• 4

Answer explanation

The square root of 49 is 7 because 7 multiplied by itself equals 49.

Tags

CCSS.8.EE.A.2

• A) 1

• B) 2

• C) 3

• D) 4

Answer explanation

The cube root of 8 is 2 because 2 x 2 x 2 = 8. Therefore, the result of the expression is 2.

Tags

CCSS.8.EE.A.2

Answer explanation

The correct order is π, √3, 0.75, 3/4. This is because π is the largest, followed by √3, then 0.75, and finally 3/4.

Tags

CCSS.8.NS.A.2