BECE Mathematics 2016 Paper

Concept:Add the decimal numbers by aligning the decimal points and place values.Explanation:Write the numbers one below the other, keeping the decimal points aligned:$$\begin{array}{r} 16.000\\ 5.600\\ 0.681\\ \hline \end{array}$$Add column by column from right to left.$0 + 0 + 1 = 1$ (write $1$)$0 + 0 + 8 = 8$ (write $8$)$0 + 6 + 6 = 12$ (write $2$, carry over $1$)$6 + 5 + 0 + \text{carry }1 = 12$ (write $2$, carry over $1$)$1 + \text{carry }1 = 2$ (write $2$)Place the decimal point in the answer directly below the other decimal points.Thus, $16 + 5.6 + 0.681 = 22.281$.Answer:Option B: $22.281$