SS:Math7.3B,3A-Add and Subtract 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.

Front

How do you add two rational numbers with different signs?

Back

To add two rational numbers with different signs, subtract the absolute values and keep the sign of the number with the larger absolute value.

Front

What is the sum of -7.79 and 5.4?

Back

-2.39

Front

How do you add fractions with different denominators?

Back

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

Front

What is the combined measure of 1/2 cup of sugar and 1/3 cup of cinnamon?

Back

5/6 cup

Front

How do you subtract a larger rational number from a smaller one?

Back

When subtracting a larger rational number from a smaller one, the result will be negative.

Front

What is the difference between 2.8 lbs and 2 1/2 lbs of chicken?

Back

3/10 lb

Front

How do you calculate total earnings over multiple weeks?

Back

Multiply the weekly earnings by the number of weeks.

Front

If Grant earned $25.10 each week for 4 weeks, how much did he earn in total?

Back

$100.40

Front

What is the total amount Grant spent on his phone bill and gas?

Back

$89.28