Decimals Operations

Front

What is a decimal?

Back

A decimal is a way of representing numbers that are not whole numbers, using a point (decimal point) to separate the whole part from the fractional part.

Front

How do you add decimals?

Back

To add decimals, align the numbers by the decimal point and add as you would whole numbers, placing the decimal point in the sum directly below the other decimal points.

Front

What is the cost of 4.58 pounds of apples at $3.15 per pound?

Back

$14.43

Front

How do you multiply decimals?

Back

To multiply decimals, multiply the numbers as if they were whole numbers, then count the total number of decimal places in both factors and place the decimal point in the product accordingly.

Front

What is the cost of 4.35 pounds of avocados at $1.78 per pound?

Back

$7.74

Front

How do you round decimals?

Back

To round decimals, look at the digit to the right of the place you are rounding to. If it is 5 or more, round up; if it is less than 5, round down.

Front

What is the cost of 7.52 gallons of gas at $2.79 per gallon?

Back

$20.98

Front

How do you subtract decimals?

Back

To subtract decimals, align the numbers by the decimal point and subtract as you would whole numbers, placing the decimal point in the difference directly below the other decimal points.

Front

What is the total cost of 2.5 pounds of grapes at $1.55 per pound and 8.75 pounds of watermelon at $0.85 per pound?

Back

$11.32

Front

What is the cost of 2.25 pounds of strawberries at $3.73 per pound?

Back

$8.39