2.5×1.7×( )×3.6+6.4×( )×0.75×( )-0.75×( )99×0.43+( )
来源:学生作业帮 编辑:作业帮 分类:数学作业 时间:2024/05/23 13:12:52
2.5×1.7×( )×3.6+6.4×( )×0.75×( )-0.75×( )99×0.43+( )
五(1)班开展互帮互助活动,学习了《整数乘法运算定律推广到小数》后,小明想编一些题目让小海练练.你能帮小明把题目编完吗?
题:2.5×1.7×( )×3.6+6.4×( )×0.75×( )-0.75×( )99×0.43+( )
五(1)班开展互帮互助活动,学习了《整数乘法运算定律推广到小数》后,小明想编一些题目让小海练练.你能帮小明把题目编完吗?
题:2.5×1.7×( )×3.6+6.4×( )×0.75×( )-0.75×( )99×0.43+( )
2.5×1.7×( 0.75 )×3.6+6.4×( 2.5)×0.75×(1.7 )-0.75×( 25×1.7 )
99×0.43+(1×0.43 )
再问: 是2.5×1.7×( )( )×3.6.......... 你敢确定百分之百对吗?
再答: 2.5×1.7×(0.3 )×(1)×3.6+6.4×( 1.7)×0.75×(1 )-0.75×( 1)
再问: 46.3×03.56+5.38×5.6-0.056这道题怎么做?请5分钟内告诉我答案!要不就不给你选为满意答案!
再答: 46.3×03.56+5.38×5.6-0.056 =(46.3+53.8-0.1)×0.56 =(100.1-0.1)×0.56 =100×0.56 =56
再问: 题打错了,应该是46.3×0.56+5.38×5.6-0.056! 结果对了,可是过程有点晕,你能给我讲一下吗? 求你了!!!!!!!!~
再答: 46.3×0.56+5.38×5.6-0.056 对每个乘积项取公因数0.56,5.6=0.56*10;0.056=0.56*0.1;合并同类项 =(46.3+53.8-0.1)×0.56 =(100.1-0.1)×0.56 =100×0.56 =56
99×0.43+(1×0.43 )
再问: 是2.5×1.7×( )( )×3.6.......... 你敢确定百分之百对吗?
再答: 2.5×1.7×(0.3 )×(1)×3.6+6.4×( 1.7)×0.75×(1 )-0.75×( 1)
再问: 46.3×03.56+5.38×5.6-0.056这道题怎么做?请5分钟内告诉我答案!要不就不给你选为满意答案!
再答: 46.3×03.56+5.38×5.6-0.056 =(46.3+53.8-0.1)×0.56 =(100.1-0.1)×0.56 =100×0.56 =56
再问: 题打错了,应该是46.3×0.56+5.38×5.6-0.056! 结果对了,可是过程有点晕,你能给我讲一下吗? 求你了!!!!!!!!~
再答: 46.3×0.56+5.38×5.6-0.056 对每个乘积项取公因数0.56,5.6=0.56*10;0.056=0.56*0.1;合并同类项 =(46.3+53.8-0.1)×0.56 =(100.1-0.1)×0.56 =100×0.56 =56
2.5×1.7×( )×3.6+6.4×( )×0.75×( )-0.75×( )99×0.43+( )
(0.75×6.4×93)÷(2.5×0.62×0.32)简算
1.(5.75-4.75)/[2.5+(0.75*1.25*8) 2.(6.9*3.6*3.5)/(1.25/0.25)
简算 1.(3.6*0.75*1.2)/(1.5*24*0.18)
(3.6×0.75×1.2)÷(1.5×24×0.18)
简算(3.6*0.75*1.2)/(1.5*2.4*0.18)
简便计算 99*2.5+2.5 6.4*4.5+3.6*4.5 6.25/0.25+0.75 99*2.5+2.5 42
找规律填数:2.5 0.75 0.225 ( ) ( )
15.75--(2.5+7.5)x(?)=0.75
因式分解:(1)、100²-101*99 (2)、6.4²+6.4*7.2+3.6²
找规律(1)1.2,2.5,3.8,()()(2)3,1.5,0.75,()
(0.75+3/4*99)除以1/5