Measurement Multiplying and Dividing Fractions Adding and Subtracting

Measurement Multiplying and Dividing Fractions

Adding and Subtracting Fractions We can add and subtract fractions with the same (common) denominator easily. 3 5 + 1 5 = 4 5

Multiplying and Dividing Fractions When multiplying and dividing fractions, we do not need to have common denominators. 3 5 x 1 3 = These do not have to be the same!

Multiplying Fractions To multiply fractions, simply multiply the two numerators and the two denominators. x 3 5 x = 1 3 = ? ?

Multiplying Fractions To multiply fractions, simply multiply the two numerators and the two denominators. x 3 5 x = 1 3 = 3 ?

Multiplying Fractions To multiply fractions, simply multiply the two numerators and the two denominators. 3 5 x x 1 3 = = 3 ?

Multiplying Fractions To multiply fractions, simply multiply the two numerators and the two denominators. 3 5 x x 1 3 = = 3 15

Multiplying Fractions If possible, state in simplest form. 3 5 x 1 3 = 3 15 = 1 5

Dividing Fractions To divide by a fraction, you must multiply by its reciprocal. To find its reciprocal, simply flip the fraction over! 3 5 5 3 The reciprocal of 3/5 is 5/3.

Example: Dividing Fractions 3 ÷ 1 = 5 3 Multiply by the reciprocal… 3 x 3 = 5 1 9 5

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