(-91)+(+45)-(-5)-(+9),
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(-91)+(+45)-(-5)-(+9),(-91)+(+45)-(-5)-(+9),(-91)+(+45)-(-5)-(+9),(-91)+(+45)-(-5)-(+9)=-91+45+5-9=-
(-91)+(+45)-(-5)-(+9),
(-91)+(+45)-(-5)-(+9),
(-91)+(+45)-(-5)-(+9),
(-91)+(+45)-(-5)-(+9)
=-91+45+5-9
=-91-9+45+5
=-100+50
=-50
(-91)+(+45)-(-5)-(+9),
(+45)+(-91)+(+5)+(-9)
45+(-9)+(-91)+5=?
9×17+91÷17-5×17+45÷17
.+45)+(-91)+5+(-9)=?
计算:45+(-9)+(-91) +15
9×17+91÷17-5×17+45÷17=?简便计算
9×17+91÷17-5×17+45÷17
9×17+91÷17-5×17+45÷17,我没分,
计算:(-49)-(+91)-(-5)+(-9)
9乘17加91除17减5乘17加45除17怎样简便算?
**9**53******91**6324*5*8*49**
计算题:1(-49)-(+91)-(-5)+(-9)
(-49)-(+91)-(-5)+(-9)
46/91*46/91+45/91*45/91-46/91*45/91-45/91*44/91怎样简算
1+9+7+3+5+2/2+9/91
既是2的倍数,又是5的倍数,以下数字有哪些?2、9、13、52、91、34、45、6、17、28、40、90
91分之13 51分之19 8分之7 45分之30 9分之5 18分之15 11分之11是最简分数吗?要说清楚!