Practice Objectives

- Demonstrate the ability to add decimals
- Demonstrate the ability to subtract decimals

## Practice Adding & Subtracting Decimals

Instructions:

Answer 7/10 questions correctly to pass.

Perform each indicated operation.

Problem:

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Adding Decimals:

- Write the numbers vertically and line up the decimal points
- Extra zeros may be written to the right of the decimal point after the final non-zero digit if desired

- Draw a plus sign "+" to the left of the bottom number and a line underneath
- Bring the decimal point straight down into the answer
- Add starting in the rightmost column and work left
- Use carrying when the result of the addition from a column is larger than 9

Subtracting Decimals:

- Write the numbers vertically and line up the decimal points
- Extra zeros may be written to the right of the decimal point after the final non-zero digit if desired
- We will need to add in zeros in some cases (top number (minuend) has fewer digits after the decimal point than the bottom number (subtrahend)) for borrowing

- Draw a minus sign "-" to the left of the bottom number and a line underneath
- Bring the decimal point straight down into the answer
- Subtract starting in the rightmost column and work left
- Use borrowing when the bottom number of a column is larger than the top number

Step-by-Step:

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