Rational Number Word Problems - 7.NS.3

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.

Front

How do you add and subtract rational numbers?

Back

To add or subtract rational numbers, convert them to a common denominator, then add or subtract the numerators while keeping the denominator the same.

Front

What is the process for multiplying rational numbers?

Back

To multiply rational numbers, multiply the numerators together and the denominators together.

Front

How do you divide rational numbers?

Back

To divide rational numbers, multiply by the reciprocal of the divisor.

Front

What is the significance of negative numbers in rational number problems?

Back

Negative numbers represent values less than zero and can affect the outcome of calculations, especially in word problems involving debts or losses.

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 the result over the original denominator.

Front

What is the formula for calculating temperature changes?

Back

To calculate temperature changes, subtract the initial temperature from the final temperature, taking into account any increases or decreases.

Front

How do you calculate total earnings based on hourly wage and hours worked?

Back

Total earnings can be calculated by multiplying the hourly wage by the total number of hours worked.

Front

What is the method for comparing two quantities in word problems?

Back

To compare two quantities, determine the ratio of the two amounts and simplify if necessary.

Front

How do you determine how many items can be made with a given amount of material?

Back

To determine how many items can be made, divide the total amount of material by the amount needed for one item.