Sticking to a Budget: Adding and Subtracting with Decimals

Contributor: Meghan Vestal. Lesson ID: 10932

Ready for a lesson that will make you hungry to learn about decimals? Using online worksheets, videos, lots of online games, and restaurant menus, learn how to add and subtract numbers with decimals!

categories

Elementary

subject
Math
learning style
Visual
personality style
Lion, Otter
Grade Level
Intermediate (3-5)
Lesson Type
Dig Deeper

Lesson Plan - Get It!

Audio:

What do money, sports statistics, and the temperature on a thermometer all have in common? They all use decimals to describe a number! Decimals are all around us, so you will learn what to do when you encounter a number with a decimal!

Decimals are everywhere!

Each day, you come into contact with decimals on several occasions. Take a few minutes to think about all the ways you have used decimals so far today. If it is early in the morning, think about all the ways you used decimals yesterday. Discuss it with a friend, family member, or teacher.

Decimals represent part of a whole number.

The easiest way to put this into perspective is to think of money. A quarter is equal to $0.25. It is not enough to equal one whole dollar. Therefore, a quarter is part of $1.00.

Since decimals are a part of our currency, it is important to be able to add and subtract with decimals.

For step-by-step instructions that demonstrate how to add and subtract numbers with decimals, go to Math is Fun's page, Adding and Subtracting Decimals. If you are still not sure, check out mathcrush.com's video, Decimals - Adding and Subtracting. Be sure to have a piece of paper and pencil handy when you watch the video, so that you are able to solve the practice problems.

If you can remember Math is Fun's 3 steps, adding and subtracting with decimals is easy!

  1. Line up the decimals
  2. Pad with 0s
  3. Solve

When you are ready, continue on to the Got It? section to practice!

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