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.

2025-03-20 11:32:53
推荐回答(1个)
回答1:

(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
=

234
135