(-5)*(+7 1/3)+(+7)*(-7 1/3)-(+12)*7 1/3 简便方法计算
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(-5)*(+71/3)+(+7)*(-71/3)-(+12)*71/3简便方法计算(-5)*(+71/3)+(+7)*(-71/3)-(+12)*71/3简便方法计算(-5)*(+71/3)+(+7
(-5)*(+7 1/3)+(+7)*(-7 1/3)-(+12)*7 1/3 简便方法计算
(-5)*(+7 1/3)+(+7)*(-7 1/3)-(+12)*7 1/3 简便方法计算
(-5)*(+7 1/3)+(+7)*(-7 1/3)-(+12)*7 1/3 简便方法计算
(-5)*(+7 1/3)+(+7)*(-7 1/3)-(+12)*7 1/3
(-5-7)*(+7 1/3)-(+12)*7 1/3
(-12)*(+7 1/3)-(+12)*7 1/3
(-12-12)*7 1/3
-8*7=-56
(-5)*(+7 1/3)+(+7)*(-7 1/3)-(+12)*7 1/3 简便方法计算
找规律1,2,3,5,8,()()7,8,6,7,5,()()
(4/5+1/4)÷7/3+7/10
两题算24点.1、(7、7、3、3)2、(5、5、5、1)
(-5)*(+7 1/3)+7*(-7 1/3)-(+12)*(-7 1/3)=多少?(要用简便方法)
-0.25/(-3/7)x(3/7)x(-1-1/5)
计算 (1)(1-105×(3/1-7/3-7/5-5/2)怎么算的 式子 105×(3/1-7/3-7/5-5/2)
(7+4√3)(7-4√3)-(3√5-1)²
简便运算 (1+1/3+1/5+1/7)*(1/3+1/5+1/7+1/9)-(1+1/3+1/5+1/7+1/7+1/9)*(1/3+1/5+1/7)
1/(1*3*5)+1/(3*5*7)+1/(5*7*9)+1/(7*9*11).+(25*27*29)
7(1)(2)(3)
-9*(-11)-12*(-8) (1/3-5/7-2/5)*10536*(-19 17/18) -5*7 1/3 +12*(-7 1/3)
9宫格填1到9个数字帮帮忙(5)()()()(7)()(3)()()()(9)()(5)()()(4)()()()()(4)()()()(7)()()()(5)(1)()(3)(7)(2)
计算:(+1)+(-3)+(+5)+(-7)……+(+2009)+(-2011)
计算:(+1)+(-3)+(+5)+(-7)+…+(+97)+(-99)
(1).6(x/3+x-1/2 ) (2).(7-3a)+(5a-6) (3).(x-3)-(5x+7)
1、().()5* 2()--------------()3()()1()--------------2.()()52、()()()* 8.9---------------()()()()()()()---------------()()()()3、 ().7()()()
(5/12-7/9-2/3)/(-1/36)