七点四三减括号三点四八点二点五期括起来用简便方法计算算式
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七点四三减括号三点四八点二点五期括起来用简便方法计算算式
七枝贺点四三减括号三点四八点二点五期括起来用简便方法计算算式7.43-(3.48-2.57)=7.43-3.48+2.57=(7.43+2.57)-3.48=10-3.48=6.52
五十四除以括号一点七加上二点一加上三点四括号用简便方法计算54÷(1.7+2.1+3.4)
=54÷7.2
=(18×3)÷(18×0.4)
=3÷0.4
=7.5
七点四乘八点八加七点四乘二点二减七点四的简便方法怎么7.4*8.8+7.4*2.2-7.4
=7.4*(8.8+2.2-1)
=7.4*10
=74
40点四的和乘二点五用简便方法计算40点四的和乘二点五用简便方法计算
40点亏猛四的和乘二点五
=4*2.5+0.4*2.5
=10+1
=11
用简便方法计算76.8-52点四三-21点七用简便方法计算76.8-52点四三-21点七
76.8-52.43-21.7
=24.37-21.7
=2.67
直接计算
六点三乘以七点四加七点二乘七点四减三点五乘七点四这个算式怎么简算原式=(6.3+7.2-3.5)x7.4
=(13.5-3.5)x7.4
=10x7.4
=74
三点四乘以二点六加七点四乘以十七乘以二用简便方法怎样算3.4*2.6+7.4*17*2
=34*(0.26+7.4)
=34*7.66
=34*7+34*0.6+34*0.06
=238+20.4+2.04
=260.44
七点7×5分之1+0点四三×2十二用简便方法计算答:7.7*1/5+0.43*22
=7.7*0.2+0.86*11
=77*0.02+0.86*11
=11*0.14+0.86*11
=11*(0.14+0.86)
=11*1
=11
52点零二除以括号七点5×3-17点四括号销搭桥简便方法52.02÷(7.5x3-17.4)
解:
=52.02÷(22.5-17.4)
=52.02÷5.1
=(52.02x10)÷(5.1x10)
=520.2÷51
=(3x173.4)÷(17x3)
=173.4÷17
=10.2x17÷17
=10.2
祝学习进步。
七枝贺点四三减括号三点四八点二点五期括起来用简便方法计算算式7.43-(3.48-2.57)=7.43-3.48+2.57=(7.43+2.57)-3.48=10-3.48=6.52
五十四除以括号一点七加上二点一加上三点四括号用简便方法计算54÷(1.7+2.1+3.4)
=54÷7.2
=(18×3)÷(18×0.4)
=3÷0.4
=7.5
七点四乘八点八加七点四乘二点二减七点四的简便方法怎么7.4*8.8+7.4*2.2-7.4
=7.4*(8.8+2.2-1)
=7.4*10
=74
40点四的和乘二点五用简便方法计算40点四的和乘二点五用简便方法计算
40点亏猛四的和乘二点五
=4*2.5+0.4*2.5
=10+1
=11
用简便方法计算76.8-52点四三-21点七用简便方法计算76.8-52点四三-21点七
76.8-52.43-21.7
=24.37-21.7
=2.67
直接计算
六点三乘以七点四加七点二乘七点四减三点五乘七点四这个算式怎么简算原式=(6.3+7.2-3.5)x7.4
=(13.5-3.5)x7.4
=10x7.4
=74
三点四乘以二点六加七点四乘以十七乘以二用简便方法怎样算3.4*2.6+7.4*17*2
=34*(0.26+7.4)
=34*7.66
=34*7+34*0.6+34*0.06
=238+20.4+2.04
=260.44
七点7×5分之1+0点四三×2十二用简便方法计算答:7.7*1/5+0.43*22
=7.7*0.2+0.86*11
=77*0.02+0.86*11
=11*0.14+0.86*11
=11*(0.14+0.86)
=11*1
=11
52点零二除以括号七点5×3-17点四括号销搭桥简便方法52.02÷(7.5x3-17.4)
解:
=52.02÷(22.5-17.4)
=52.02÷5.1
=(52.02x10)÷(5.1x10)
=520.2÷51
=(3x173.4)÷(17x3)
=173.4÷17
=10.2x17÷17
=10.2
祝学习进步。
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