Adding Integers
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Meets NCTM Standards:
Lesson Summary:
This lesson on adding integers demonstrates how to visually represent positive and negative numbers using counters, and how to add different combinations of positive and negative numbers. The rule for adding numbers with different signs is to subtract their absolute values, while adding numbers with the same signs involves adding their absolute values and then adding the sign. The lesson provides examples and practice problems for students to apply the rules of adding integers.
Lesson Description:
Shows how to add positive and negative numbers; uses counters.
More free YouTube videos by Julie Harland are organized at http://yourmathgal.com
Questions answered by this video:
- How do you add positive and negative numbers?
- How can you represent positive and negative numbers using symbols?
- How do you add 3 + (-5)?
- How can you see how positive and negative numbers cancel each other out when adding a positive and a negative number?
- How can you add -3 + (-4)?
- How do you add -4 + (-2)?
- How do you add 3 + 2?
- How do you add 3 + -6?
- How do you add -7 + -10?
- How do you add -100 + -200 + -300?
- How do you add -12 + 3?
- Why is -12 + 3 the same as 3 + -12?
- How do you add -22 + 10?
- How do you add 32 + -11?
- What is the difference between -14 + -22, 14 + -22, and -14 + 22?
- What is the difference between -26 + -11 and 26 + -11?
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Staff Review
This is a great introduction to adding positive and negative numbers using plus and minus signs to represent integer tiles. This is a very good lesson to watch when first learning about adding positive and negative numbers.
