Question

Subtract.
(1) 85.96 – 2.345
(2) 632.24 – 97.45
(3) 200.005 – 17.186

Answer 1

(i)
$\begin{array}{ccccccc}& 8& 5& .& 9& {}^5\cancel{6}& {}^{10}\cancel{0}\\ -& & 2& .& 3& 4& 5\\ & 8& 2& .& 6& 1& 5\\ & & & & & & \end{array}$
∴ 85.96 − 2.345 = 82.615

(ii)
$\begin{array}{ccccccc}& {}^5\cancel{6}& {}^{12}\cancel{3}& {}^{11}\cancel{2}& .& {}^{11}\cancel{2}& {}^{14}\cancel{4}\\ -& & 9& 7& .& 4& 5\\ & 5& 3& 4& .& 7& 9\\ & & & & & & \end{array}$
∴ 632.24 − 97.45 = 534.79

(iii)
$\begin{array}{cccccccc}& {}^1\cancel{2}& {}^9\cancel{0}& {}^9\cancel{0}& .& {}^9\cancel{0}& {}^9\cancel{0}& {}^{15}\cancel{5}\\ -& & 1& 7& .& 1& 8& 6\\ & 1& 8& 2& .& 8& 1& 9\\ & & & & & & & \end{array}$
∴ 200.005 − 17.186 = 182.819