All Common Core: 8th Grade Math Resources
Example Questions
Example Question #21 : Expressions & Equations
Solve:
In order to solve this problem, we need to recall our exponent rules:
When our base numbers are equal to each other, like in this problem, we can add our exponents together using the following formula:
Let's apply this rule to our problem
Solve for the exponents
We cannot leave this problem in this format because we cannot have a negative exponent. Instead, we can move the base and the exponent to the denominator of a fraction:
Solve the problem
Example Question #22 : Expressions & Equations
Solve:
In order to solve this problem, we need to recall our exponent rules:
When our base numbers are equal to each other, like in this problem, we can add our exponents together using the following formula:
Let's apply this rule to our problem
Solve for the exponents
We cannot leave this problem in this format because we cannot have a negative exponent. Instead, we can move the base and the exponent to the denominator of a fraction:
Solve the problem
Example Question #23 : Expressions & Equations
Solve:
In order to solve this problem, we need to recall our exponent rules:
When our base numbers are equal to each other, like in this problem, we can add our exponents together using the following formula:
Let's apply this rule to our problem
Solve for the exponents
We cannot leave this problem in this format because we cannot have a negative exponent. Instead, we can move the base and the exponent to the denominator of a fraction:
Solve the problem
Example Question #24 : Expressions & Equations
Solve:
In order to solve this problem, we need to recall our exponent rules:
When our base numbers are equal to each other, like in this problem, we can add our exponents together using the following formula:
Let's apply this rule to our problem
Solve for the exponents
We cannot leave this problem in this format because we cannot have a negative exponent. Instead, we can move the base and the exponent to the denominator of a fraction:
Solve the problem
Example Question #25 : Expressions & Equations
Solve:
In order to solve this problem, we need to recall our exponent rules:
When our base numbers are equal to each other, like in this problem, we can add our exponents together using the following formula:
Let's apply this rule to our problem
Solve for the exponents
We cannot leave this problem in this format because we cannot have a negative exponent. Instead, we can move the base and the exponent to the denominator of a fraction:
Solve the problem
Example Question #26 : Expressions & Equations
Solve:
In order to solve this problem, we need to recall our exponent rules:
When our base numbers are equal to each other, like in this problem, we can add our exponents together using the following formula:
Let's apply this rule to our problem
Solve for the exponents
We cannot leave this problem in this format because we cannot have a negative exponent. Instead, we can move the base and the exponent to the denominator of a fraction:
Solve the problem
Example Question #27 : Expressions & Equations
Which of the following expressions is equivalent to ?
In order to solve this problem, we need to recall our exponent rules:
When our base numbers are equal to each other, like in this problem, we can add our exponents together using the following formula:
Let's apply this rule to our problem
Solve for the exponents
We cannot leave this problem in this format because we cannot have a negative exponent. Instead, we can move the base and the exponent to the denominator of a fraction:
Solve the problem
Example Question #1 : Use Powers Of 10 To Estimate Quantities: Ccss.Math.Content.8.Ee.A.3
Select the number that is equal to four times ten to the fifth power.
Four times ten to the fifth power can be written numerically as the following:
When a number between one and ten is multiplied by a power of ten it is said to be written in scientific notation. This number is currently written in scientific notation.
Even though this appears to be a challenging math problem (i.e. because we have a power of ten), we can simply move our decimal place after the four, or , over spaces to the right using zeros as place holders.
Add commas and simplify.
Example Question #2 : Use Powers Of 10 To Estimate Quantities: Ccss.Math.Content.8.Ee.A.3
Select the number that is equal to three times ten to the seventh power.
Three times ten to the seventh power can be written numerically as the following:
When a number between one and ten is multiplied by a power of ten it is said to be written in scientific notation. This number is currently written in scientific notation.
Even though this appears to be a challenging math problem (i.e. because we have a power of ten), we can simply move our decimal place after the three, or , over spaces to the right using zeros as place holders.
Add commas and simplify.
Example Question #3 : Use Powers Of 10 To Estimate Quantities: Ccss.Math.Content.8.Ee.A.3
Select the number that is equal to two times ten to the eighth power.
Two times ten to the eighth power can be written numerically as the following:
When a number between one and ten is multiplied by a power of ten it is said to be written in scientific notation. This number is currently written in scientific notation.
Even though this appears to be a challenging math problem (i.e. because we have a power of ten), we can simply move our decimal place after the two, or , over spaces to the right using zeros as place holders.
Add commas and simplify.