问题 解答题
计算下列各题,能用简便方法的要用简便方法
9.9×9+9.9535-167-2358×11×125
145+63+37+55456-156÷3200-(64+540÷18)
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.

单项选择题 A1/A2型题
填空题