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12 hundreds \(+\) 4 tens \(+\) 7 tenths \(+\) 9 hundredths \(=\)
 
29 thousands \(+\) 7 tens \(+\) 4 ones \(+\) 2 hundredths \(+\) 6 thousandths \(=\)
 
[Note: Insert decimal point if necessary]