Subtracting Mixed Numbers
Learning Objective
I can subtract mixed numbers with unlike denominators.
Key Concepts
When subtracting mixed numbers, it is important to subtract the entire mixed number, including both the whole number and fraction parts.
When subtracting mixed numbers in stacked form, if the top fraction is smaller than the bottom fraction, you need to borrow or re-group from the whole number.
When borrowing, you can change the whole number part into a whole fraction such as changing 1 into 3/3, 5/5, or 8/8 to help make the top fraction bigger.
Practice Questions
This lesson includes 10 practice questions to reinforce learning.
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1. Why is subtracting mixed numbers sometimes more complicated than adding them?
2. What is the first step you should take when subtracting mixed numbers with unlike denominators?
3. Rewrite the number 5 as a mixed number with a denominator of 3.
...and 7 more questions
Educational Video
Math Antics - Subtracting Mixed Numbers
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