计算下面各题,能简算的要简算,并写出主要的简算过程.(1)9.06-2.68-0.32(2)(3.06÷0.25+2.76)×0
计算下面各题,能简算的要简算,并写出主要的简算过程.(1)9.06-2.68-0.32(2)(3.06÷0.25+2.76)×0.2(3)18?(35+4÷25)(4)2...
计算下面各题,能简算的要简算,并写出主要的简算过程.(1)9.06-2.68-0.32(2)(3.06÷0.25+2.76)×0.2(3)18?(35+4÷25)(4)2.7×1.25+5.3×125%
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(1)9.06-2.68-0.32,
=9.06-(2.68+0.32),
=9.06-3,
=6.06;
(2)(3.06÷0.25+2.76)×0.2,
=(12.24+2.76)×0.2,
=15×0.2,
=3;
(3)18-(
+4÷
),
=18-(0.6+4×
),
=18-(0.6+10),
=18-10.6,
=7.4;
(4)2.7×1.25+5.3×125%,
=2.7×1.25+5.3×1.25,
=(2.7+5.3)×1.25,
=8×1.25,
=10.
=9.06-(2.68+0.32),
=9.06-3,
=6.06;
(2)(3.06÷0.25+2.76)×0.2,
=(12.24+2.76)×0.2,
=15×0.2,
=3;
(3)18-(
3 |
5 |
2 |
5 |
=18-(0.6+4×
5 |
2 |
=18-(0.6+10),
=18-10.6,
=7.4;
(4)2.7×1.25+5.3×125%,
=2.7×1.25+5.3×1.25,
=(2.7+5.3)×1.25,
=8×1.25,
=10.
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