脱式计算(能简算的要简算)1.18×2.58+0.5+1.42×1.18 (21.85-17.5)×(0.45÷0.9) 1.75×(0.1÷0.
脱式计算(能简算的要简算)1.18×2.58+0.5+1.42×1.18(21.85-17.5)×(0.45÷0.9)1.75×(0.1÷0.2)-0.18÷0.993....
脱式计算(能简算的要简算)1.18×2.58+0.5+1.42×1.18 (21.85-17.5)×(0.45÷0.9) 1.75×(0.1÷0.2)-0.18÷0.9 93.6÷[(54.8+45.2)×(6-5.46)].
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(1)1.18×2.58+0.5+1.42×1.18
=1.18×(2.58+1.42)+0.5
=1.18×4+0.5
=4.72+0.5
=5.22;
(2)(21.85-17.5)×(0.45÷0.9)
=4.35×0.5
=2.175;
(3)1.75×(0.1÷0.2)-0.18÷0.9
=1.75×0.5-0.2
=0.875-0.2
=0.675;
(4)93.6÷[(54.8+45.2)×(6-5.46)]
=93.6÷[100×0.54]
=93.6÷54
=
.
=1.18×(2.58+1.42)+0.5
=1.18×4+0.5
=4.72+0.5
=5.22;
(2)(21.85-17.5)×(0.45÷0.9)
=4.35×0.5
=2.175;
(3)1.75×(0.1÷0.2)-0.18÷0.9
=1.75×0.5-0.2
=0.875-0.2
=0.675;
(4)93.6÷[(54.8+45.2)×(6-5.46)]
=93.6÷[100×0.54]
=93.6÷54
=
234 |
135 |
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