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18·76×9·9+18·76 0·25×16·2×0·4 4·8×9·9 7·09×10·8 -0.8×7.09 4.

来源:学生作业帮 编辑:搜搜做题作业网作业帮 分类:数学作业 时间:2024/04/29 14:47:04
18·76×9·9+18·76 0·25×16·2×0·4 4·8×9·9 7·09×10·8 -0.8×7.09 4.8×100.1 4.2 ÷3.5 32
18·76×9·9+18·76 0·25×16·2×0·4 4·8×9·9 7·09×10·8 -0.8×7.09 4.
18.76*9.9+18.76
=18.76*10+18.76-1.876
=187.6+18.76-1.876
=204.484
0.25*16.2*0.4
=0.25*0.4*16.2
=0.01*16.2
=0.162
4.8*9.9
=4.8*10-0.48
=48-0.48
=47.52
7.09*10.8-0.8*7.09
=7.09*(10.8-0.8)
=7.09*10
=70.9
4.8*100.1
=4.8*100-4.8*0.1
=480-0.48
=479.52
4.2÷3.5
=4.2÷7÷0.5
=0.6÷0.5
=1.2