问题
解答题
计算下列各题,能用简便方法的要用简便方法
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答案
(1)9.9×9+9.9
=(9+1)×9.9,
=10×9.9,
=99;
(2)535-167-235
=535-235-167,
=300-167,
=133;
(3)8×11×125
=8×125×11,
=1000×11,
=11000;
(4)145+63+37+55
=145+55+(63+37),
=200+100,
=300;
(5)456-156÷3
=456-52,
=404;
(6)200-(64+540÷18)
=200-(64+30),
=200-94,
=106.