试题与答案

简算. 1.25×10.7×8 10-(0.56×8.3+0.44×8.3) 4

题型:解答题

题目:

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:

(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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