Operations with Rational Numbers

Front

What is a rational number?

Back

A rational number is any number that can be expressed as the quotient or fraction of two integers, where the denominator is not zero.

Tags

CCSS.5.NBT.A.2

Front

How do you add two fractions with different denominators?

Back

To add fractions with different denominators, find a common denominator, convert the fractions, and then add the numerators.

Tags

CCSS.5.NF.A.1

CCSS.5.NF.A.2

Front

What is the process to subtract fractions?

Back

To subtract fractions, ensure they have a common denominator, then subtract the numerators and keep the common denominator.

Tags

CCSS.4.NF.B.3C

CCSS.4.NF.B.3D

Front

How do you multiply two fractions?

Back

To multiply fractions, multiply the numerators together and the denominators together.

Tags

CCSS.5.NF.B.6

Front

What is the rule for dividing fractions?

Back

To divide fractions, multiply by the reciprocal of the divisor (the second fraction).

Tags

CCSS.6.NS.A.1

Front

What is the cost per unit?

Back

The cost per unit is calculated by dividing the total cost by the number of units.

Tags

CCSS.6.RP.A.1

CCSS.6.RP.A.2

Front

How do you round a number to the nearest cent?

Back

To round to the nearest cent, look at the third decimal place: if it's 5 or more, round up; if it's less than 5, round down.

Tags

CCSS.5.NBT.A.4

Front

What is the sum of 9 1/2 and 7 1/2?

Back

The sum of 9 1/2 and 7 1/2 is 17.

Tags

CCSS.4.NF.B.3C

CCSS.4.NF.B.3D

Front

What is the quotient of two numbers?

Back

The quotient is the result of dividing one number by another.

Tags

CCSS.3.OA.A.2

Front

How do you convert a mixed number to an improper fraction?

Back

To convert a mixed number to an improper fraction, multiply the whole number by the denominator, add the numerator, and place that over the original denominator.