问题
解答题
用简便方法计算. (1)31.4×0.18+31.4×0.82 (2)
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答案
(1)31.4×0.18+31.4×0.82,
=31.4×(0.18+0.82),
=31.4×1,
=31.4;
(2)
+5.9+4.1+0.75,1 4
=(5.9+4.1)+(0.25+0.75),
=10+1,
=11.
用简便方法计算. (1)31.4×0.18+31.4×0.82 (2)
|
(1)31.4×0.18+31.4×0.82,
=31.4×(0.18+0.82),
=31.4×1,
=31.4;
(2)
+5.9+4.1+0.75,1 4
=(5.9+4.1)+(0.25+0.75),
=10+1,
=11.