问题 解答题
直接写出得数.
777×9+111×37=
5-
2
3
-
1
3
=
7
9
+
4
11
-
4
9
+
7
11
=
3
5
÷
1
5
×5=
72÷1.2+72÷1.8=9+3÷7÷6×14=
2
7
+
2
5
+
3
7
+
3
5
=
8.4×13-3×8.4=
60×(1-
1
3
-
1
2
)=
994
995
×996=
答案

(1)777×9+111×37,

=111×63+111×37,

=111×(63+37),

=111×100,

=11100;

(2)5-

2
3
-
1
3

=5-(

2
3
+
1
3
),

=5-1,

=4;

(3)

7
9
+
4
11
-
4
9
+
7
11

=(

7
9
-
4
9
)+(
4
11
+
7
11
),

=

1
3
+1,

=1

1
3

(4)

3
5
÷
1
5
×5,

=

3
5
×5×5,

=3×5,

=15;

(5)72÷1.2+72÷1.8,

=60+40,

=100;

(6)9+3÷7÷6×14,

=9+

3
7
×
1
6
×14,

=9+

3
7
×14×
1
6

=9+6×

1
6

=9+1,

=10;

(7)

2
7
+
2
5
+
3
7
+
3
5

=(

2
7
+
3
7
)+(
2
5
+
3
5
),

=

5
7
+1,

=1

5
7

(8)8.4×13-3×8.4,

=8.4×(13-3),

=8.4×10,

=84;

(9)60×(1-

1
3
-
1
2
),

=60×1-60×

1
3
-60×
1
2

=60-20-30,

=40-30,

=10;

(10)

994
995
×996,

=

994
995
×(995+1),

=

994
995
×995+
994
995
×1,

=994+

994
995

=994

994
995

故答案为:11100,4,1

1
3
,15,100,10,1
5
7
,84,10,994
994
995

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