Question

Annabelle uses models to compare two decimal numbers. She says 0.24 is greater than 0.4 because 24 > 4.

A square partitioned into one hundred equal parts with twenty four parts shaded. To the right is a square partitioned into ten equal parts with four parts shaded.

Which of these explains Annabelle's mistake?

A. Annabelle incorrectly shaded the models. She should shade six more tenths.

B. Annabelle incorrectly counted the number of shaded parts in the models. She should compare 3 shaded parts to 4 shaded parts.

C. Annabelle incorrectly compared hundredths to tenths. She should compare 24 hundredths to 40 hundredths.

D. Annabelle incorrectly compared tenths. She should compare 4 hundredths to 4 hundredths.

Answer 1

C

Explanation:

0.24 is the same as 24 hundredths.

0.4 is the same as 4 tenths or 40 hundredths.