SaiBook.us Decimals

Lesson Example Discussion Quiz: Class Homework

Example

Title: Subtraction of Decimals

Grade: 4-a Lesson: S3-L5

Explanation: The best way to understand decimals is by looking at some examples. Take turns and read each example for easy understanding.

Examples:

Step: 1a

Give that \$15.4 - 14.3\$

$1a$

Explanation: The given decimals are \$15.4\$ and \$14.3\$, which are like decimals, since each decimal contains one decimal place.

Step: 1b

Write down the numbers, one under the other, with the decimal points lined up.

$1b$

Explanation: We can Subtract decimals the same way we Subtract whole numbers. We just make sure that digits of the same value are lined up underneath each other.

First, write the larger number above the smaller number, making sure to line up the decimal points.
Subtract another decimal point on the bottom row. If you need to, label the columns to show the place value of each.
Then we can find the difference, just like we do with whole numbers.

Step: 1c

Subtract the decimals.

$1c$

Explanation: Subtract decimals the same way how we subtract whole numbers.

\$15.4 - 14.3 = 1.1\$

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