问题 解答题
怎样算简便就怎样算.
6
7
-
6
7
÷
2
3
×
1
6

8
9
×[
3
4
-(
7
16
-
1
4
)]
24×
51
43
+51×
19
43

0.25×(1.6+1.6+1.6+1.6)
答案

(1)

6
7
-
6
7
÷
2
3
×
1
6

=

6
7
-
6
7
×
3
2
×
1
6

=

6
7
-
3
14

=

9
14

(2)

8
9
×[
3
4
-(
7
16
-
1
4
)],

=

8
9
×[(
3
4
+
1
4
)-
7
16
],

=

8
9
×[1-
7
16
],

=

8
9
×
9
16

=

1
2

(3)24×

51
43
+51×
19
43

=

24
43
×51+51×
19
43

=(

24
43
+
19
43
)×51,

=1×51,

=51;

(4)0.25×(1.6+1.6+1.6+1.6),

=0.25×4×1.6,

=1×1.6,

=1.6.

判断题
问答题 简答题