(80-9.8)*0.6-2.12 3.47*99+3.47*10
来源:学生作业帮 编辑:搜搜考试网作业帮 分类:数学作业 时间:2024/08/18 22:40:07
(80-9.8)*0.6-2.12 3.47*99+3.47*10
(1/4+3/8)÷(1-3/4*2/5) (2/15+1/12)*30-1.25
呵呵.偶对数学不敏感.
(1/4+3/8)÷(1-3/4*2/5) (2/15+1/12)*30-1.25
呵呵.偶对数学不敏感.
![(80-9.8)*0.6-2.12 3.47*99+3.47*10](/uploads/image/z/6769531-19-1.jpg?t=%EF%BC%8880-9.8%EF%BC%89%2A0.6-2.12+3.47%2A99%2B3.47%2A10)
(80-9.8)*0.6-2.12
=[80-(10-0.2)]*0.6-2.12
=[80-10+0.2]*0.6-2.12
=[70+0.2]*0.6-2.12
=70*0.6+0.2*0.6-2.12
=42+0.12-2-0.12
=40
3.47*99+3.47*10
=3.47*(100-1)+3.47*10
=3.47*100-3.47*1+3.47*10
=347-3.47+34.7
=378.23
(1/4+3/8)÷(1-3/4*2/5)
=(2/8+3/8)÷(1-3/10)
=(5/8)÷(7/10)
=5/8*10/7
=50/56
=25/28
(2/15+1/12)*30-1.25
=(2/15+1/12)*30-5/4
=2/15*30-1/12*30-5/4
=4-5/2-5/4
=4-10/4-5/4
=4-15/4
=16/4-15/4
=1/4
=[80-(10-0.2)]*0.6-2.12
=[80-10+0.2]*0.6-2.12
=[70+0.2]*0.6-2.12
=70*0.6+0.2*0.6-2.12
=42+0.12-2-0.12
=40
3.47*99+3.47*10
=3.47*(100-1)+3.47*10
=3.47*100-3.47*1+3.47*10
=347-3.47+34.7
=378.23
(1/4+3/8)÷(1-3/4*2/5)
=(2/8+3/8)÷(1-3/10)
=(5/8)÷(7/10)
=5/8*10/7
=50/56
=25/28
(2/15+1/12)*30-1.25
=(2/15+1/12)*30-5/4
=2/15*30-1/12*30-5/4
=4-5/2-5/4
=4-10/4-5/4
=4-15/4
=16/4-15/4
=1/4
(80-9.8)*0.6-2.12 3.47*99+3.47*10
10.6-(6.6+0.125÷12.5%) (80-9.8)×0.6-2.12
要用简便方法算!91+91×(13分之2-7分之1) (80-9.8)×0.6-2.12 6.75-(4分之3+3.6)
简算0.8%×17×125%和18÷0.25和60×(5/12-1/5)和(80-9.8)×0.6-2.12
3.47-8÷17-317
简便计算:(80-9.8)×0.6-2.1
3.47乘(3.75-2.5)+4.53乘1.25.如何用简便方法做.
简便运算 1.13/9+18/9+17/9 2.8.2-0.6*(0.9-0.75) 3.47.3-1.7*5-1.5
7142.85÷3.47÷2.7×1.7×0.7
如果用科学计数法表示一个数是3.47乘10的负8次方,那么原数是多少?
10.63-2.53-3.47+8.54.12.5乘6.4 乘0.25能巧算就巧算
3.47-8/17-十七分之八x3 简算