下列各题,能简算的简算 1,6.45-2.74+3.6 2,45.36+(83.4-15.07)
下列各题,能简算的简算1,6.45-2.74+3.62,45.36+(83.4-15.07)3,67.39-(12.67+17.39)...
下列各题,能简算的简算
1,6.45-2.74+3.6
2,45.36+(83.4-15.07)
3,67.39-(12.67+17.39) 展开
1,6.45-2.74+3.6
2,45.36+(83.4-15.07)
3,67.39-(12.67+17.39) 展开
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6.45-2.74+3.6
=3.71+3.6
=7.33
45.36+(83.4-15.07)
=45.36+68.33
=113.69
67.39-(12.67+17.39)
=67.39-12.67-17.39
=67.39-17.39-12.67
=50-12.67
=37.33
=3.71+3.6
=7.33
45.36+(83.4-15.07)
=45.36+68.33
=113.69
67.39-(12.67+17.39)
=67.39-12.67-17.39
=67.39-17.39-12.67
=50-12.67
=37.33
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(1)6.45-2.74+3.6=3.71+3.6=7.31
(2)45.36+(83.4-15.07)=45.36+68.33=113.69;
(3)67.39-(12.67+17.39)=67.39-17.39-12.67=50-12.67=37.33
求采纳
(2)45.36+(83.4-15.07)=45.36+68.33=113.69;
(3)67.39-(12.67+17.39)=67.39-17.39-12.67=50-12.67=37.33
求采纳
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2016-05-19
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①48-2.3×12,=48-27.6,=20.4;②50×(0.8+0.4),=50×0.8+50×0.4,=40+20,=60;③7.34×2.1+7.34×7.8+7.34×1.1,=7.34×(2.1+7.8+1.1),=7.34×10,=73.4;④20.5÷1.25÷0.8,=20.5÷(1.25×0.8),=20.5÷1,=20.5;⑤(8.1-5.4)÷3.6+85.7,=2.7÷3.6+85.7,=0.75+85.7,=86.45;⑥9.88×9+9.88,=9.88×(9+1),=9.88×10,=98.8.
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1,6.45-2.74+3.6
=3.71+3.6
=7.31
2,45.36+(83.4-15.07)
=45.36+68.33
=113.69
3,67.39-(12.67+17.39)
=67.39-12.67-17.39
=67.39-17.39-12.67
=50-12.67
=37.33
=3.71+3.6
=7.31
2,45.36+(83.4-15.07)
=45.36+68.33
=113.69
3,67.39-(12.67+17.39)
=67.39-12.67-17.39
=67.39-17.39-12.67
=50-12.67
=37.33
本回答被网友采纳
已赞过
已踩过<
评论
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你对这个回答的评价是?
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