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.