问题 解答题
37+22+63+45530-475-258×(125×ll)
44×2572×12564×99+64
4900÷25÷4(100+4)×2517×43-43×7.
答案

(1)37+22+63+45,

=(37+63)+(22+45),

=100+67,

=167;

(2)530-475-25,

=530-(475+25),

=530-500,

=30;

(3)8×(125×ll),

=8×125×11,

=1000×11,

=11000;

(4)44×25,

=(4×11)×25,

=4×25×11,

=100×11,

=1100;

(5)72×125,

=8×125×9,

=1000×9,

=9000;

(6)64×99+64,

=(99+1)×64,

=100×64,

=6400;

(7)4900÷25÷4,

=4900÷(25×4),

=4900÷100,

=49;

(8)(100+4)×25,

=100×25+4×25,

=2500+100,

=2600;

(9)17×43-43×7,

=(17-7)×43,

=10×43,

=430.

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