问题 解答题
用简便方法计算.
4300÷4÷251456-237-763125x32x25
99×99989×99+89268-(168-35)
答案

(1)4300÷4÷25

=4300÷(4×25)

=4300÷100

=43;

(2)1456-237-763

=1456-(237+763)

=1456-1000

=456;

(3)125×32×25

=125×8×4×25

=(125×8)×(4×25)

=1000×100

=100000;

(4)99×999

=99×(1000-1)

=99×1000-99×1

=99000-99

=98901;

(5)89×99+89

=89×(99+1)

=89×100

=8900;

(6)268-(168-35)

=268-168-35

=100-35

=65.

实验题
单项选择题 B型题