First Name. Your Response. What is the sum of these fractions in lowest terms? How do you add and subtract fractions? Provide an example and demonstrate the steps you would take to arrive at the answer. What strategies would you use to help a student struggling with the concepts of adding and subtracting.
I forgot how to add and subtract mixed fractions. How do you do it? Match the equation with the step needed to solve it. I consent to the use of following cookies:. Cookie Declaration About Cookies. Necessary 0 Marketing 0 Analytics 0 Preferences 0 Unclassified 0. Necessary cookies help make a website usable by enabling basic functions like page navigation and access to secure areas of the website.
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To add and subtract fractions with the same denominator, or bottom number, place the 2 fractions side by side. Add or subtract the numerators, or the top numbers, and write the result in a new fraction on the top. The bottom number of the answer will be the same as the denominator of the original fractions. What is the rule for subtracting fractions? The first rule is that our fractions must have common denominators.
If the denominators in each fraction are not the same, use the equivalent fraction process to make them the same before moving onto the second rule, which is that you subtract the numerators only, keeping the denominator the same. Can you cross cancel when subtracting fractions? Cross-cancellation is really a special version of simplifying fractions.
You can only take advantage of it when multiplying or dividing fractions. You get the same answer if you multiply first, and then simplify, but it can be a lot more work. Cross-cancellation is just a shortcut, but a good one. Can you cross simplify when subtracting fractions? Here's the easy way to subtract fractions that have different denominators: Cross-multiply the two fractions and subtract the second number from the first to get the numerator of the answer. After you cross-multiply, be sure to subtract in the correct order.
What are fractions with different denominators called? Fractions with different denominators are called, unlike fractions. Here the denominators of fractions have different values.
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