Sharmi compared 140.82__15.4 and provided the explanation below. Explain what she did wrong and provide the correct solution and explanation.

15.4 has fewer digits than140.82 . So, in order to line up the decimal points and fill place values with zeros, I must add two zeros to 15.4, giving me 150.40 . Now, 140.82 has a 4 in the tens place, and 150.50 has a 5 in the tens place. Since 4 is less than 5, the correct answer is .

Question

Sharmi compared 140.82__15.4 and provided the explanation below. Explain what she did wrong and provide the correct solution and explanation. 

15.4 has fewer digits than140.82 . So, in order to line up the decimal points and fill place values with zeros, I must add two zeros to 15.4, giving me 150.40 . Now, 140.82 has a 4 in the tens place, and 150.50 has a 5 in the tens place. Since 4 is less than 5, the correct answer is .

anonymous · Answer

you can't just add two zeros to 15.4 and get 150.40... that's a totally different number