问题 解答题

用递等式计算(能巧算的要巧算).

(1)51×13+49×13

(2)6537-29×36

(3)5930-152-348

(4)3717÷(152-89)

答案

(1)51×13+49×13,

=(51+49)×13,

=100×13,

=1300;

(2)6537-29×36,

=6537-1044,

=5493;

(3)5930-152-348,

=5930-(152+348),

=5930-500,

=5430;

(4)3717÷(152-89),

=3717÷63,

=59.

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