(0.55-2/5)÷(6/7×3/8)怎样简便怎样算

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(0.55-2/5)÷(6/7×3/8)怎样简便怎样算
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(0.55-2/5)÷(6/7×3/8)怎样简便怎样算
(0.55-2/5)÷(6/7×3/8)怎样简便怎样算

(0.55-2/5)÷(6/7×3/8)怎样简便怎样算
(0.55-2/5)÷(6/7×3/8)
=3/20÷9/28
=3/20×28/9
=7/15

(0.55-2/5)÷(6/7×3/8)怎样简便怎样算 在下面的算式中填上若干个( ),使等式成立:1÷2÷3÷4÷5÷6÷7÷8÷9. (1)12÷6分之一÷7分之30 (2)5分之七7÷3分之4÷5分之7×3分之8 计算过程①(5/6--2/3)×0.9 ②1--7/9÷7/8 2/7÷1/7—1/5×1/3=?(3/4+3/7-1/2)÷1/28=?51×8/25-8/2/7÷1/7—1/5×1/3=?(3/4+3/7-1/2)÷1/28=?51×8/25-8/25=?8/3÷4/9-7/6-5/6=? 1:1/5×[1/3÷(1/2+5/6)] 2:1-(1/6×2/5)÷7/9 3:12÷(1-31:1/5×[1/3÷(1/2+5/6)]2:1-(1/6×2/5)÷7/93:12÷(1-3/7)4:4/5×2/3-1/6÷1/25:(1/2+1/3)÷(1-3/8)6:[(1-3/5)×2/3]÷4 能简算的要简算 1、2/3×5/7+2/3×2/72、7/2×3/7÷6 3、8×5/6+2/5÷4 4、(1/2+2/5)÷3/2 2÷4/3 4/7÷6/7 8/7×5 1/3-1/5 7/15÷10% 15/16÷(5/12÷5/8+3/8) 6/7-6/7×(2/3+1/9) 【1-(1-2/3÷15/16÷(5/12÷5/8+3/8)6/7-6/7×(2/3+1/9)【1-(1-2/3÷2/3)】×18/19(5/6-1/4×2/3)÷1/6 -9又8/19÷(-1/19) 、 (-1/2+1/6-3/8+5/24)÷(1/24)(0.25)÷(-3/7)*(-1-1/5) 3×(-9)+7×(-9) (5/4-7/6)×(-8/7) (-54)÷6÷(-3) (-54)÷6÷(-3) 2×{5+(-2)^3}-(2/13-1/3-1/6)×78 (-2/3)×27/8÷(3/2)^3 1/30-(-2/3+3/5)÷(-2) (1)2/3 ÷ 5 + 5 ÷ 2/3(2)5 × 5/6 + 5/6 × 5(3)3/8 × 68 - 1/8 ÷ 1/68(4)( 26 ÷ 13/24 ) ÷ 13(5) 1又3/5 - 5/12 × ( 1/4 - 1/2 × 1/2)(6) 4/15 ×( 5/7 - 3/14 ÷ 3/4 )(7) 11/15 + ( 3/4 - 2/3 )÷ 1/5(8) (-7/9+5/6-3/4)÷1/36-8÷(-3)的2次方等于写出算式 数学题(加括号)加括号1+2×3-4÷5=11×2+3-4+5÷6=11+2×3÷4+5+6÷7=11+2÷3×4+5+6-7÷8=11×2+3+4-5+6+7-8÷9=1 7/15÷3= 1/3×6/7= 8÷6/7= 2/5÷1= 1÷(2÷3)÷(3÷4)÷(5÷6)÷(6÷7)÷(7÷8)÷(8÷9) 快点,3分钟以内! 3/8×1/6×3/10,65×(2-5/13),5/6×3/10÷5/16 ,28×5/14-6 ,(1/3-1/8)÷1/6,5/8÷(4/9×3/8)(1/4-1/4)÷5/18 ,(7/27-1/9)×9,5/16÷(15/16÷5/8),42×(8-6/7),4÷7/20×7/10 ,7/15÷(2/3×41/5),13÷(1+1/3) ,5/13÷7/13×35 ,6/3 【1】4-(-2)³-3³÷(-1)³【2】-10+8÷(-2)²-(-4)×(-3)【3】3×(-4)+(-28)÷7【4】(-48)÷8-(-25)×(-6)【5】-2⁴+(3-7)²-2【6】(-56)÷(-12+8)+(-2)×5【7】-3/4