1、简算 45×1/8+24×12.5%-21×0.125 1/4×5+1/5×6+1/6×7
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45×1/8+24×12.5%-21×0.125
=45×0.125+24×0.125-21×0.125
=(45+24+21)×0.125
=90×0.125
=100×0.125-10×0.125
=12.5-1.25
=10.25
1/4×5+1/5×6+1/6×7
=1/4×4+1/4×1+1/5×5+1/5×1+1/6×6+1/6×1
=1+1/4+1+1/5+1+1/6
=3+(15/60+12/60+10/60)
=3+37/60
=3又60分之37
=45×0.125+24×0.125-21×0.125
=(45+24+21)×0.125
=90×0.125
=100×0.125-10×0.125
=12.5-1.25
=10.25
1/4×5+1/5×6+1/6×7
=1/4×4+1/4×1+1/5×5+1/5×1+1/6×6+1/6×1
=1+1/4+1+1/5+1+1/6
=3+(15/60+12/60+10/60)
=3+37/60
=3又60分之37
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45×1/8+24×12.5%-21×0.125
因为1/8=12.5%=0.125,所以这道题是提取0.125
=(45+24-21)×0.125
=48×0.125
=48×1/8
=6
1/4×5+1/5×6+1/6×7
=1+1/4+1+1/5+1+1/6
=3+1/4+1/5+1/6
=3+15/60+12/60+10/60
=3+37/60
因为1/8=12.5%=0.125,所以这道题是提取0.125
=(45+24-21)×0.125
=48×0.125
=48×1/8
=6
1/4×5+1/5×6+1/6×7
=1+1/4+1+1/5+1+1/6
=3+1/4+1/5+1/6
=3+15/60+12/60+10/60
=3+37/60
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亲,你真棒
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2019-04-30 · 知道合伙人教育行家
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1、简算:
45×1/8+24×12.5%-21×0.125
=45*1/8+24*1/8-21*1/8
=(45+24-21)*1/8
=48*1/8
=6
1/4×5+1/5×6+1/6×7
=5/4+6/5+7/6
=1+1+1+(1/4+1/5+1/6)
=3+(15/60+12/60+10/60)
=3+37/60
=3又37/60
45×1/8+24×12.5%-21×0.125
=45*1/8+24*1/8-21*1/8
=(45+24-21)*1/8
=48*1/8
=6
1/4×5+1/5×6+1/6×7
=5/4+6/5+7/6
=1+1+1+(1/4+1/5+1/6)
=3+(15/60+12/60+10/60)
=3+37/60
=3又37/60
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谢谢亲
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45×1/8+24×12.5%-21×0.125
=45×(1/8)+24×(1/8)-21×(1/8)
=(1/8)×(45+24-21)
=(1/8)×48
=6
1/4×5+1/5×6+1/6×7
=5/4+6/5+7/6
=1+1/4+1+1/5+1+1/6
=3+30/120+24/120+20/120
=3+74/120
=3+37/60
=217/60
=45×(1/8)+24×(1/8)-21×(1/8)
=(1/8)×(45+24-21)
=(1/8)×48
=6
1/4×5+1/5×6+1/6×7
=5/4+6/5+7/6
=1+1/4+1+1/5+1+1/6
=3+30/120+24/120+20/120
=3+74/120
=3+37/60
=217/60
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