计算:(能简算要简算)要过程一.9.9-9.9*(9.9-9.9)二.36*3/4+53*3/4-75% 三2/9÷(4/15*5/6+5/6)四.605*99+605五.[1/2-(1/3-1/4)]÷5/24
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![计算:(能简算要简算)要过程一.9.9-9.9*(9.9-9.9)二.36*3/4+53*3/4-75% 三2/9÷(4/15*5/6+5/6)四.605*99+605五.[1/2-(1/3-1/4)]÷5/24](/uploads/image/z/431933-5-3.jpg?t=%E8%AE%A1%E7%AE%97%EF%BC%9A%EF%BC%88%E8%83%BD%E7%AE%80%E7%AE%97%E8%A6%81%E7%AE%80%E7%AE%97%EF%BC%89%E8%A6%81%E8%BF%87%E7%A8%8B%E4%B8%80.9.9-9.9%2A%EF%BC%889.9-9.9%EF%BC%89%E4%BA%8C.36%2A3%2F4%2B53%2A3%2F4-75%25+%E4%B8%892%2F9%C3%B7%EF%BC%884%2F15%2A5%2F6%2B5%2F6%EF%BC%89%E5%9B%9B.605%2A99%2B605%E4%BA%94.%5B1%2F2-%EF%BC%881%2F3-1%2F4%EF%BC%89%5D%C3%B75%2F24)
计算:(能简算要简算)要过程一.9.9-9.9*(9.9-9.9)二.36*3/4+53*3/4-75% 三2/9÷(4/15*5/6+5/6)四.605*99+605五.[1/2-(1/3-1/4)]÷5/24
计算:(能简算要简算)要过程
一.9.9-9.9*(9.9-9.9)二.36*3/4+53*3/4-75% 三2/9÷(4/15*5/6+5/6)四.605*99+605五.[1/2-(1/3-1/4)]÷5/24
计算:(能简算要简算)要过程一.9.9-9.9*(9.9-9.9)二.36*3/4+53*3/4-75% 三2/9÷(4/15*5/6+5/6)四.605*99+605五.[1/2-(1/3-1/4)]÷5/24
一.9.9-9.9*(9.9-9.9)
=9.9-0
=9.9;
二.36*3/4+53*3/4-75%
=(36+53-1)×(3/4)
=88×(3/4)
=66;
三2/9÷(4/15*5/6+5/6)
=2/9÷(5/6)(19/15)
=(2/9)×(6/5)×(15/19)
=20/19;
四.605*99+605
=605×(99+1)
=60500;
五.[1/2-(1/3-1/4)]÷5/24
=1/2×(24/5)-(1/3)×(24/5)+(1/4)×(24/5)
=12/5-8/5+6/5
=10/5
=2
最后(9.9-9.9)=0 0乘任何数都等于0
1、=9.9-9.9*0 =9.9-0 =9.9
2、=36*3/4+53*3/4-3/4
=3/4(36+53-1)
=3/4 *88
=66
3、=2/9 ÷(2/9+5/6)
=2/9 * 18/19
=4/19
4、=605*(99+1)
=605*10...
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1、=9.9-9.9*0 =9.9-0 =9.9
2、=36*3/4+53*3/4-3/4
=3/4(36+53-1)
=3/4 *88
=66
3、=2/9 ÷(2/9+5/6)
=2/9 * 18/19
=4/19
4、=605*(99+1)
=605*100 =60500
5、[1/2-(1/3-1/4)]÷5/24
=(1/2-1/3+1/4)÷5/24
=5/12 *24/5
=2
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