Question

Solve.
(1) 905.5 + 27.197
(2) 39 + 700.65
(3) 40 + 27.7 + 2.451

Answer 1

(i)
$\begin{array}{cccccccc}& & \overline{)1}& & & & & \\ & 9& 0& 5& .& 5& 0& 0\\ +& & 2& 7& .& 1& 9& 7\\ & 9& 3& 2& .& 6& 9& 7\\ & & & & & & & \end{array}$
∴ 905.5 + 27.197 = 932.697

(ii)
$\begin{array}{ccccccc}& & 3& 9& .& 0& 0\\ +& 7& 0& 0& .& 6& 5\\ & 7& 3& 9& .& 6& 5\\ & & & & & & \end{array}$
∴ 39 + 700.65 = 739.65

(iii)
$\begin{array}{cccccccc}& & \overline{)1}& \overline{)1}& & & & \\ & & 4& 0& .& 0& 0& 0\\ & & 2& 7& .& 7& 0& 0\\ +& & & 2& .& 4& 5& 1\\ & & 7& 0& .& 1& 5& 1\\ & & & & & & & \end{array}$
∴ 40 + 27.7 + 2.451 = 70.151