Adding & Subtracting Decimals

Front

What is the process of adding decimals?

Back

To add decimals, align the numbers by the decimal point and add each column starting from the right, carrying over if necessary.

Front

How do you subtract decimals?

Back

To subtract decimals, align the numbers by the decimal point and subtract each column starting from the right, borrowing if necessary.

Front

What is the difference between the original price and the sale price?

Back

The difference is calculated by subtracting the sale price from the original price.

Front

If an item costs $7.42 and another costs $3.54, how do you find the total cost?

Back

Add the two amounts together: $7.42 + $3.54 = $10.96.

Front

How do you calculate change from a purchase?

Back

To calculate change, subtract the total cost of the purchase from the amount given to the cashier.

Front

What is the total cost of multiple items?

Back

The total cost is found by adding the prices of all items together.

Front

What does it mean to round a decimal?

Back

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

Front

What is a decimal point?

Back

A decimal point is a dot used to separate the whole number part from the fractional part of a decimal number.

Front

How do you handle decimals in word problems?

Back

Read the problem carefully, identify the numbers involved, and determine whether to add or subtract based on the context.

Front

What is the importance of aligning decimal points in calculations?

Back

Aligning decimal points ensures that each digit is in the correct place value, which is crucial for accurate addition or subtraction.