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7.5÷0.4 12.6×2 7.7÷1.4

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原式 =(12.6÷1.4)x(7.6÷1.9)x(2.32÷2.9) =9x4x0.8 =36x0.8 =28.8 供参考。

原式=(12.6÷1.4)×(7.6÷1.9)×(2.32÷2.9) =9×4×0.8 =36×0.8 =28.8 望采纳,谢谢

(1)46.5×99+46.5=46.5×(99+1)=46.5×100=4650(2)12.5÷2.5÷0.4=12.5÷(2.5×0.4)=12.5÷1=12.5(3)2.6×1.9÷2.6×1.9=2.6÷2.6×1.9×1.9=1×1.9×1.9=3.61(4)(7.7+1.54)÷0.7=9.24÷0.7=13.2(5)10.8÷[(4.62-1.92)×4]=10.8÷[2.7×4]=10.8÷10.8...

(1)35.6+(12.6-4.4),=35.6+8.2,=43.8;(2)90÷0.4÷2.5,=90÷(0.4×2.5),=90÷1,=90;(3)0.86×15.4-14.4×0.86,=0.86×(15.4-14.4),=0.86×1,=0.86;(4)5.4÷0.6+(2.3-0.46),=5.4÷0.6+1.84,=9+1.84,=10.84;(5)7.52×10.1,=...

你好,很高兴为你解答 6·12÷7·2÷1.25 简便运算 =6.12÷(7.2x1.25) =6.12÷(0.9x8x1.25) =6.12÷(0.9x10) =6.12÷9 =0.68 满意采纳哦!!

=12.6/1.4*(7.6/1.9)*(2.32/2.9) =9*4*0.8 =36*0.8 =144/5=28.8

3.5×0.4=1.4 2.5×0.4=1 2.3×0.2=0.46 2.1÷0.3=7 7.1×0.4=2.84 4.5÷0.15=30 1-0.07=0.93 0.42÷0.7=0.6 12.4÷4=3.1 2.5+1.5=4 5.9×0.2=1.18 0.48÷0.8=0.6 0.25×1.3×4=1.3 20÷0.01=2000 9÷0.01=900 5.5÷1.1=5 4.79+15.81=20.6 0.3÷0.03=10 0.2×0.1...

(1)2.5+7.5÷5,=2.5+1.5,=4;(2)12.6+4.5÷3-12.7,=12.6+1.5-12.7,=14.1-12.7,=1.4;(3)9999×2222+3333×3334,=(3333×3)×2222+3333×3334,=3333×(3×2222)+3333×3334,=3333×(6666+3334),=3333×10000,=33330000;(4)2.9×6.7+2...

解:3.5×0.4=1.4 2.5×0.4=1 2.3×0.2=0.46 2.1÷0.3=7 7.1×0.4=2.84 4.5÷0.15=30 1-0.07=0.93 0.42÷0.7=0.6 12.4÷4=3.1 2.5+1.5=4 5.9×0.2=1.18 0.48÷0.8=0.6 0.25×1.3×4=1.3 20÷0.01=2000 9÷0.01=900 5.5÷1.1=5 4.79+15.81=20.6 0.3÷0.03=10 0.2...

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