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Fraction Review Sheet
Remember that when you are subtracting, the first rule is that you must have a common denominator. Once the common denominator is in place, borrow if necessary. Then subtract, placing the answer over the denominator; reduce as necessary.
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[DOC File]FRACTION BASICS
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We do this when we rename a fraction with a common denominator when adding or subtracting fractions. If adding + , the LCD is 15. = Since 3 • 5 = 15, multiply by • = = Since 5 • 3 = 15 multiply by • = Now, + = When reducing fractions, divide the numerator and denominator by the same number.
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[DOCX File]GRADE 7 MATHEMATICS
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To compare fractions, the total number of parts should be the same: The total number of parts is represented by the denominator, and the numerator represents the part we have. e.g.: 1 (Numerator) 3 (Denominator) .
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[DOCX File]lkueh | A website for students and parents
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You need a common denominator when adding and subtracting fractions, but not when multiplying or dividing. Multiply across the top of the fractions, and multiply across the bottom of the fractions. If you can, reduce numbers before multiplying.
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[DOCX File]Freehold Borough School District / Overview
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Adding and Subtracting Fractions with different denominator Rule: Fractions must have the same denominators to add them. Step 1: Find common denominator ( find the LCM of the two numbers or you can always multiply the denominators together to find the common denominator )
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[DOC File]FRACTIONS - YTI Career Institute
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K. Adding and Subtracting Fractions. Step 1 – Find a common denominator (a number that both denominators . will go into) Step 2 – Raise each fraction to higher terms as needed. Step 3 – Add or subtract the numerators only as shown. Step 4 – Carry denominator over. Step 5 …
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[DOC File]Algebraic Fractions
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To add or subtract algebraic fractions you must find a common denominator first. Tips for finding a Common Denominator. If the denominators do not have a common factor, then Common Denominator is their product. If one denominator is a multiple of another, the common denominator is the multiple denominator.
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[DOC File]Rational Expressions
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SS6.3 Adding and Subtracting Rational Expressions w/ Common Denominators. When we have a common denominator, as with fractions, we simply add or subtract the numerators. We do have to be cautious because when subtracting it is the entire numerator that's subtracted, so we must use the distributive property to subtract.
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[DOCX File]Sum of Two Fractions
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Solve real world problems involving addition and subtraction of fractions referring to the same whole, including cases of unlike denominators, e.g., by using visual fraction models or equations to represent the problem. Use benchmark fractions and number sense of fractions to estimate mentally and assess the reasonableness of answers.
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[DOC File]Division of Polynomials
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The rules for adding and subtracting rational expressions are the as the rules for adding and subtracting fractions. Thus, if the denominators of two rational expressions to be added (or subtracted) are equal, we add (or subtract) the numerators and keep the common denominator. That is, if a/b and c/b are two rational expressions, then ...
finding a common denominator worksheet

Adding fractions common denominator worksheet