计算下面各题,能简算的必须简算.9.5×1.06-2.52÷2.4 &n...
计算下面各题,能简算的必须简算.9.5×1.06-2.52÷2.46.25÷1.25÷0.82.5×(3.5-1.65)×0.427.2÷(3.2+23×0.6)68.5...
计算下面各题,能简算的必须简算.9.5×1.06-2.52÷2.4 6.25÷1.25÷0.8 2.5×(3.5-1.65)×0.4 27.2÷(3.2+23×0.6)68.5+31.5÷(0.29+0.41)3.82×(2.8-1.3)-1.82×1.5.
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(1)9.5×1.06-2.52÷2.4,
=10.07-1.05,
=9.02;
(2)6.25÷1.25÷0.8,
=6.25÷(1.25×0.8),
=6.25÷1,
=6.25;
(3)2.5×(3.5-1.65)×0.4,
=2.5×1.85×0.4,
=2.5×0.4×1.85,
=1×1.85,
=1.85;
(4)27.2÷(3.2+23×0.6),
=27.2÷(3.2+13.8),
=27.2÷17,
=1.6;
(5)68.5+31.5÷(0.29+0.41),
=68.5+31.5÷0.7,
=68.5+45,
=113.5;
(6)3.82×(2.8-1.3)-1.82×1.5,
=3.82×1.5-1.82×1.5,
=1.5×(3.82-1.82),
=1.5×2,
=3.
=10.07-1.05,
=9.02;
(2)6.25÷1.25÷0.8,
=6.25÷(1.25×0.8),
=6.25÷1,
=6.25;
(3)2.5×(3.5-1.65)×0.4,
=2.5×1.85×0.4,
=2.5×0.4×1.85,
=1×1.85,
=1.85;
(4)27.2÷(3.2+23×0.6),
=27.2÷(3.2+13.8),
=27.2÷17,
=1.6;
(5)68.5+31.5÷(0.29+0.41),
=68.5+31.5÷0.7,
=68.5+45,
=113.5;
(6)3.82×(2.8-1.3)-1.82×1.5,
=3.82×1.5-1.82×1.5,
=1.5×(3.82-1.82),
=1.5×2,
=3.
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