问题
解答题
计算,能简算的要简算.
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答案
(1)6.4×7.6=48.64;
(2)5.68×7.5=42.6;
(3)184.6÷2.8=
;923 14
(4)0.8×(1.25+50),
=0.8×1.25+0.8×50,
=1+40,
=41;
(5)47.6÷4÷2.5,
=47.6÷(4×2.5),
=47.6÷10,
=4.76;
(6)36.45÷(0.82+3.4×0.2),
=36.45÷(0.82+0.68),
=36.45÷1.5,
=24.3;
(7)4.3×68+43×3.2,
=43×6.8+43×3.2,
=43×(6.8+3.2),
=43×10,
=430;
(8)6.75÷[0.9÷(0.3×0.4)],
=6.75÷[0.9÷0.12],
=6.75÷7.5,
=0.9;
(9)3.72×0.1+3.72×8.9,
=3.72×(0.1+8.9),
=3.72×9,
=33.48.