问题 解答题
简便运算
102×32+102×67+10215.91-7.45-6.55.
答案

(1)102×32+102×67+102,

=102×(32+67+1),

=102×100,

=10200;

(2)15.91-7.45-6.55,

=15.91-(7.45+6.55),

=15.91-14,

=1.91.

解答题
单项选择题 A1/A2型题