a) \(62.23+38.62+39.62\)
\(=62\left(23+38+39\right)\)
\(=62.90\)
\(=5580\)
b) \(83.95-17.95+95.34\)
\(=95\left(83-17+34\right)\)
\(=95.100\)
\(=9500\)
c) \(25.733+53.733+267.78\)
\(=733\left(25+53\right)+267.78\)
\(=733.78+267.78\)
\(=78\left(733+267\right)\)
\(=78.1000\)
\(=78000\)
d) \(472.38+91.528-53.528\)
\(=472.38+528.\left(91-53\right)\)
\(=472.38+528.38\)
\(=38\left(472+528\right)\)
\(=38.1000\)
\(=38000\)
f)\(58.32-29.75+42.32-25.29\)
\(=32\left(58+42\right)-29\left(75+25\right)\)
\(=32.100-29.100\)
\(=3200-2900\)
\(=300\)
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