问题 解答题
计算下面各题(能简算的要简算).
706×99+70625×
1
3
×
2
5
×
3
10
1.6+3.1+5.4+6.9
1
2
-
1
4
)×
2
5
答案

(1)706×99+706,

=706×(99+1),

=706×100,

=70600;

(2)25×

1
3
×
2
5
×
3
10

=(25×

2
5
)×(
3
10
×
1
3
),

=10×

1
10

=1;

(3)1.6+3.1+5.4+6.9,

=(1.6+5.4)+(6.9+3.1),

=7+10,

=17;

(4)(

1
2
-
1
4
)×
2
5

=

1
4
×
2
5

=

1
10

单项选择题 A1/A2型题
名词解释