用递等式计算,(写出必要的计算过程,能简便的要简便计算)3.76+6.24×0.573×1.61-1.61+1.61×2832.84-5.77-12.84-3.2318.3÷6.1+2.4×2.251

用递等式计算,(写出必要的计算过程,能简便的要简便计算)3.76+6.24×0.573×1.61-1.61+1.61×2832.84-5.77-12.84-3.2318.3÷6.1+2.4×2.251

问题描述:

用递等式计算,(写出必要的计算过程,能简便的要简便计算)
3.76+6.24×0.5                       
73×1.61-1.61+1.61×28
32.84-5.77-12.84-3.23                   18.3÷6.1+2.4×2.25
1.66÷0.25 [0.87÷(0.09+0.2)+2.4]÷0.54


最佳答案:

(1)3.76+6.24×0.5
=3.76+3.12
=6.88;

(2)73×1.61-1.61+1.61×28
=1.61×(73-1+×28)
=1.61×100
=161;

(3)32.84-5.77-12.84-3.23
=(32.84-12.84)-(5.77+3.23)
=20-9
=11;

(4)18.3÷6.1+2.4×2.25
=3+5.4
=8.4;

(5)1.66÷0.25
=1.66÷0.25÷4×4
=1.66÷(0.25×4)×4
=1.66÷1×4
=1.66×4
=6.64;

(6)[0.87÷(0.09+0.2)+2.4]÷0.54
=[0.87÷0.29+2.4]÷0.54
=[3+2.4]÷0.54
=5.4÷0.54
=10.

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