问题
解答题
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答案
①5.7-0.45÷1.5×3
=5.7-0.3×3
=5.7-0.9
=4.8
②1.8×（1.4+0.26÷2）
=1.8×（1.4+0.13）
=1.8×1.53
=2.754
③1.25÷（12-9.5）×0.2
=1.25÷2.5×0.2
=0.5×0.2
=0.1．
搜题请搜索小程序“爱下问搜题”
|
①5.7-0.45÷1.5×3
=5.7-0.3×3
=5.7-0.9
=4.8
②1.8×（1.4+0.26÷2）
=1.8×（1.4+0.13）
=1.8×1.53
=2.754
③1.25÷（12-9.5）×0.2
=1.25÷2.5×0.2
=0.5×0.2
=0.1．