Cross-Cancelling MULTIPLYING FRACTIONS

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What is cross-cancelling in multiplying fractions?

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Cross-cancelling is a method used to simplify fractions before multiplying them. It involves dividing the numerator of one fraction by a factor of the denominator of the other fraction, if they share a common factor.

Tags

CCSS.5.NF.B.6

Front

Back

Tags

CCSS.5.NF.B.6

Front

What is the first step in multiplying fractions?

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The first step is to multiply the numerators together and the denominators together, but cross-cancelling can simplify the process.

Tags

CCSS.5.NF.B.6

Front

What does it mean to simplify a fraction?

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To simplify a fraction means to reduce it to its lowest terms, where the numerator and denominator have no common factors other than 1.

Front

Back

Tags

CCSS.5.NF.B.6

Front

Back

Tags

CCSS.5.NF.B.6

Front

Why is cross-cancelling useful when multiplying fractions?

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Cross-cancelling makes calculations easier and reduces the size of the numbers, leading to simpler results.

Tags

CCSS.5.NF.B.6

Front

Back

Tags

CCSS.5.NF.B.6

Front

What do you do if there are no common factors to cross-cancel?

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If there are no common factors, simply multiply the numerators and denominators directly.

Tags

CCSS.5.NF.B.6

Front

Back

Tags

CCSS.5.NF.B.6