试题:
简算.
1.25×10.7×8
10-(0.56×8.3+0.44×8.3)
49.8×2.73+2.73×50.3+0.273
1414÷3.5.

答案:

我来补答
(1)1.25×10.7×8,
=1.25×8×10.7,
=10×10.7,
=107;
(2)10-(0.56×8.3+0.44×8.3),
=10-8.3×(0.56+0.44),
=10-8.3×1,
=1.7;
(3)49.8×2.73+2.73×50.3+0.273,
=2.73×(49.8+50.3)+0.273,
=2.73×100.1+0.273,
=2.73×100+2.73×0.1+0.273,
=273+0.546,
=273.546;
(4)1414÷3.5,
=(1414×2)÷(3.5×2),
=2828÷7,
=404.
 
 
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