问题
解答题
递等式计算,能巧算的要巧算.
(1)173+532+827+268
(2)36×4+2×36
(3)450÷9×3
(4)545-166+445.
答案
(1)173+532+827+268
=(173+827)+(532+268)
=1000+800
=1800
(2)36×4+2×36
=36×(4+2)
=36×6
=216
(3)450÷9×3
=50×3
=150
(4)545-166+445
=379+445
=824