Question

Hector added 30.24 + 16.26. His work is shown.

What error did Hector make?
30.24
+16.26
46.410
He did not line up the decimal points properly.
He did not line up the digits properly.
He did not regroup hundredths when adding digits.
He did not regroup tenths when adding digits.

Answer 1

He did not regroup hundredths when adding digits

Explanation:

30.24+16.26=46.50

Answer 2

He did not regroup hundredths when adding digits

Explanation:

30.24

+16.26

-----------

46.50

It can't be the first two, and because .04+.06 are hundredths, it must be the third one.

He did not regroup hundredths when adding digits.