-66×4-(-2.5)÷(-0.1)﹙-0.02)×﹙-20﹚×﹙-5﹚×4.5
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-66×4-(-2.5)÷(-0.1)﹙-0.02)×﹙-20﹚×﹙-5﹚×4.5-66×4-(-2.5)÷(-0.1)﹙-0.02)×﹙-20﹚×﹙-5﹚×4.5-66×4-(-2.5)÷(-0.1
-66×4-(-2.5)÷(-0.1)﹙-0.02)×﹙-20﹚×﹙-5﹚×4.5
-66×4-(-2.5)÷(-0.1)
﹙-0.02)×﹙-20﹚×﹙-5﹚×4.5
-66×4-(-2.5)÷(-0.1)﹙-0.02)×﹙-20﹚×﹙-5﹚×4.5
先算负66乘以4 再算负2.5除以0.1 然后将两个结果想减
第二道题挨着乘
-66×4-(-2.5)÷(-0.1)﹙-0.02)×﹙-20﹚×﹙-5﹚×4.5
-66×4-﹙﹣2.5﹚÷﹙﹣0.1﹚
33.02-(148.4-90.85)÷2.5 快揲
33.02-(148.4-90.85)÷2.5 简算
初一上学期关于有理数加减法混合运算的题!计算:1.23-17-(-7)+(-16)2.0+1-[﹙-1﹚-﹙负七分之三)-(+5)-﹙负七分之四)]+|-4|3.(-2.5)-(+2.7)-(-1.6)-(-2.7)+(+2.4)化简
4×-8×0.1×-0.125×2.5×-10=?
2.5×(0.1÷5)-0.18÷0.36=( )要过程,简便计算
4x³-4x²y-﹙x-y) 4x³-4x²y-﹙x-y)
﹙-98﹚×﹙0.125﹚+﹙-98﹚×⅛-98×﹙-4/7)简便
( )( )( )X ( )( )--------------------------- 5 ( )( ) ( )( ) 4-------------- ( )
简便方法计算.40.8-3.48-16.52 0.8×(12.5-1.25) 25简便方法计算.40.8-3.48-16.52 0.8×(12.5-1.25) 25.7+25.7×99 4.87×0.25×4 17.85÷2.5–7.85÷2.5
(-35)÷5-(-25)×(-4)
整式的乘法...(1)﹙3x+4y﹚﹙x-2y﹚ (2)12x²-﹙3x+y﹚﹙4x-3y﹚ (3)﹙x-y﹚² (4)﹙-2x+3﹚²(5)﹙2x-y﹚﹙2x+y﹚-﹙x-3y﹚² (6)﹙-n﹚的4次方÷﹙-n﹚ (7)y
(-0.25)÷(-1/4)等于多少?
(1)(√3)/(2)-(1)/(√3-1)+﹙-√2﹚^0+﹙2-√3﹚^-1;(2)﹙√3+1﹚﹙√3-1﹚+﹙√3-1﹚^0-﹙-﹙1/3﹚﹚^-2;(3)﹙1/3﹚^-1+16÷﹙-2﹚^3+﹙2006-(π/5)﹚^0-3;(4)﹙1/3
(-3)÷[(-2/5)÷(-1/4)]
3-m/2m-4÷(m+2-5m-2)
-66×4-(-2.5)÷(0.1) 按乘方计算