(-3)+(+7)+4+(+3)+(-5)(-4)[计算]明确步骤.(+66)+(-12)+(+11.3)+(-7.4)+(+8.1 )+(-2.5)(3)题:
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![(-3)+(+7)+4+(+3)+(-5)(-4)[计算]明确步骤.(+66)+(-12)+(+11.3)+(-7.4)+(+8.1 )+(-2.5)(3)题:](/uploads/image/z/1485-45-5.jpg?t=%28-3%29%2B%28%2B7%29%2B4%2B%28%2B3%29%2B%28-5%29%28-4%29%5B%E8%AE%A1%E7%AE%97%5D%E6%98%8E%E7%A1%AE%E6%AD%A5%E9%AA%A4.%EF%BC%88%2B66%EF%BC%89%2B%EF%BC%88-12%EF%BC%89%2B%EF%BC%88%2B11.3%EF%BC%89%2B%EF%BC%88-7.4%EF%BC%89%2B%EF%BC%88%2B8.1+%EF%BC%89%2B%EF%BC%88-2.5%EF%BC%89%EF%BC%883%EF%BC%89%E9%A2%98%EF%BC%9A)
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(-3)+(+7)+4+(+3)+(-5)(-4)[计算]明确步骤.(+66)+(-12)+(+11.3)+(-7.4)+(+8.1 )+(-2.5)(3)题:
(-3)+(+7)+4+(+3)+(-5)(-4)[计算]明确步骤.(+66)+(-12)+(+11.3)+(-7.4)+(+8.1 )+(-2.5)
(3)题:
(-3)+(+7)+4+(+3)+(-5)(-4)[计算]明确步骤.(+66)+(-12)+(+11.3)+(-7.4)+(+8.1 )+(-2.5)(3)题:
(-3)+(+7)+4+(+3)+(-5)(-4)=-3+7+4+3+20=37
(+66)+(-12)+(+11.3)+(-7.4)+(+8.1 )+(-2.5)
=66-12+11.3-7.4+8.1-2.5
=63.5
找出下面数字的规律 填空白处的数字7 7 2 5 7 5 3 5 7 4 7 3 7 4 7 5 5 3 7 5 7 3 7 7 7 5 5 3 5 7 5 4 4 7 5 7 7 5 7 5 4 7 5 3 7 __ 7 2 5 7 7 4 5 7 5 7 7 3 1 4 7 7 5 4 7 7 4 5 7 2 7 7 4 7 5 7 2 7 7 3 7 7 5 4 7 7 7 4 7 7 5 4 7 7 3 4 4 7 5 7
3 2 5 4 7 ( )
(-7)*(-4/3)*5/14
3,4,5,6,7,
3,4,5,6,7
3+4+5+6+7
3 4 5 6 7
3 4 5 6 7 .
3、4、5、7快
3,4,5,6,7,
3,4,5,6,7,
3,4,5,6,7
5/4+3/7=
3/4,5/7,7/9通分
简便计算:[(-7/5)+(-7/3)-(-7/4)]/(-7)
简算:5/8*3/7*4/5
7+3+5+5+6+4
3/7×4/5+4/7×2/5简便计算