4 hundredths + 8 hundredths = 12 hundredths
12 hundredths = 1 tenth 2 hundredths
4 hundredths = 0.04
+
8 hundredths = 0.08
--------------------------------
12 hundredths = 0.12
0.12 can be seen as follows:
0 ones
.
1 tenth
2 hundredths
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