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Adding and subtracting fractions

3 videos
2 skills
You've already got 2 cups of sugar in the cupboard. Your grandmother's recipe for disgustingly-sweet fudge cake calls for 3 and 1/3 cups of sugar. How much sugar do you need to borrow from you robot neighbor? Adding and subtracting fractions with unlike denominators is key. It might be a good idea to look at the equivalent fractions tutorial before tackling this one. Common Core Standard: 5.NF.A.1

Adding fractions: different denominators

VIDEO 4:06 minutes
To solve this problem, we need to find the least common multiple to get at the common denominator. Can you help? We bet you can!

Adding fractions: common denominator

VIDEO 2:33 minutes
To add these fractions we need to find a common denominator. The answer can be expressed as a mixed number. Let's try together.

Subtracting fractions: different denominators

VIDEO 4:24 minutes
If you conquered adding fractions with different denominators, then subtracting fractions will be a snap. Don't worry...we'll take it slow and explain every step.