Sadi wanted to compare the fractions 2 3 and 5 9 using common denominators. His work is shown below. The common denominator is 9. Two-thirds times one-third = two-ninths. Two-ninths less-than five-ninths. So, two-thirds is less-than five-ninths. What errors did Sadi make? Check all that apply. The common denominator is 6, not 9. He should have multiplied by, not . He should have gotten a common numerator, not a common denominator. The fraction is greater than , not less than

He should have multiplied by and not

The fraction is greater than

Step-by-step explanation:

Given

Sadi's steps are:

The common denominator is 9.

So:

Required

Sadi's error

Her first error is that: he should have multiplied by and not

This is so because, whatever factor is multiplied to the numerator has to be multiplied to the denominator, as well.

So, we have:

By comparison:

So, his second error is that: the fraction is greater than

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step-by-step explanation:

step-by-step explanation:

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