Cross-Multiplying to Compare Fractions

Front

What is cross-multiplying?

Back

Cross-multiplying is a method used to compare two fractions by multiplying the numerator of one fraction by the denominator of the other.

Tags

CCSS.4.NF.A.2

Front

How do you compare fractions using cross-multiplying?

Back

To compare fractions, cross-multiply the numerators and denominators. If a/b and c/d are the fractions, compare a*d and b*c.

Tags

CCSS.4.NF.A.2

Front

What does the symbol '<' mean?

Back

The symbol '<' means 'less than'. It is used to show that one number or fraction is smaller than another.

Tags

CCSS.4.NF.A.2

Front

What does the symbol '>' mean?

Back

The symbol '>' means 'greater than'. It indicates that one number or fraction is larger than another.

Tags

CCSS.4.NF.A.2

Front

What does the symbol '=' mean?

Back

The symbol '=' means 'equal to'. It shows that two numbers or fractions are the same.

Front

If 1/2 and 3/4 are compared using cross-multiplying, what is the result?

Back

1/2 < 3/4 because 1*4 < 2*3 (4 < 6).

Tags

CCSS.4.NF.A.2

Front

If 5/6 and 2/3 are compared using cross-multiplying, what is the result?

Back

5/6 > 2/3 because 5*3 > 6*2 (15 > 12).

Tags

CCSS.4.NF.A.2

Front

What is the first step in cross-multiplying?

Back

The first step is to identify the two fractions you want to compare.

Tags

CCSS.4.NF.A.2

Front

Can you use cross-multiplying for whole numbers?

Back

No, cross-multiplying is specifically for comparing fractions.

Tags

CCSS.4.NF.A.2

Front

What is an example of two fractions that are equal?

Back

1/2 and 2/4 are equal because they represent the same value.

Tags

CCSS.4.NF.A.1

CCSS.5.NF.B.5B