Adding and Subtracting Decimals

Front

What is a decimal?

Back

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

Front

How do you add decimals?

Back

To add decimals, align the decimal points and add as you would with whole numbers, then place the decimal point in the sum.

Front

How do you subtract decimals?

Back

To subtract decimals, align the decimal points and subtract as you would with whole numbers, then place the decimal point in the difference.

Front

What is the value of 0.2 - 0.02?

Back

0.18

Front

What is the total of 7.45 and 5.21?

Back

12.66

Front

How do you find the total cost of multiple items?

Back

Add the prices of all items together.

Front

What is 5.72 - 3.55?

Back

2.17

Front

If a meal costs $6.00 and you have a $0.50 coupon, how much do you pay?

Back

$5.50

Front

What is the first step in adding decimals?

Back

Align the decimal points of the numbers being added.

Front

What does it mean to round a decimal?

Back

Rounding a decimal means adjusting it to a nearby value that is easier to work with, often to a certain number of decimal places.