题目内容

怎样简便怎样算
19
36
×
9
38
48×
47
48
7
9
-
4
13
×
7
9
7
9
×(9-
1
11
(2
4
5
+1
2
7
)-(1
1
5
+
2
7
12.1-(
1
15
+
1
21
)×105
23×
5
13
×2
3
5
1.8×2
1
6
+5.4
9×1
3
10
+
7
10
×9
8
17
÷4+2
1
2
11
14
-
5
7
+
5
28
)×28+10.1
1
30
+
1
35
+
1
63
)×2
1
7
78
79
×80
4
5
×2
1
7
×1
3
4
125
5
16
5.5×6
2
3
+3
1
3
×5
1
2
897×
3
8
-
3
8
+104×0.375
5
3
4
×86+5.75×(3.5-3
1
10
19
36
×
9
38
=
1
8


48×
47
48
=47

7
9
-
4
13
×
7
9

=
7
9
×(1-
4
13

=
7
9
×
9
13

=
7
13


7
9
×(9-
1
11

=
7
9
×9-
7
9
×
1
11

=7-
7
99

=6
92
99


(2
4
5
+1
2
7
)-(1
1
5
+
2
7

=(2
4
5
-1
1
5
)+(1
2
7
-
2
7

=1
3
5
+1
=2
3
5


12.1-(
1
15
+
1
21
)×105
=12.1-(
1
15
×105+
1
21
×105)
=12.1-(7+5)
=0.1

23×
5
13
×2
3
5

=23×
5
13
×
13
5

=23

1.8×2
1
6
+5.4
=1.8×
13
6
+5.4

=3.9+5.4
=9.3

1
3
10
+
7
10
×9

=9×(1
3
10
+
7
10

=9×2
=18

8
17
÷4+2
1
2

=
8
17
×
1
4
+2
1
2

=
2
17
+2
1
2

=2
21
34
11
14
-
5
7
+
5
28
)×28+10.1
=
11
14
×28-
5
7
×28+
5
28
×28+10.1
=22-20+5+10.1
=17.1

1
30
+
1
35
+
1
63
)×2
1
7

=
1
30
×
15
7
+
1
35
×
15
7
+
1
63
×
15
7

=
2
7
+
3
49
+
5
147

=
56
147


78
79
×80
=
78
79
×(79+1)
=
78
79
×79+
78
79

=78
78
79


4
5
×2
1
7
×1
3
4

=
4
5
×
15
7
×
7
4

=3

125
5
16

=8×125+8×
5
16

=1000+2.5
=1002.5

5.5×6
2
3
+3
1
3
×5
1
2

=5.5×(6
2
3
+3
1
3

=5.5×10
=55

897×
3
8
-
3
8
+104×0.375
=
3
8
×(897-1+104)
=
3
8
×1000
=375

5
3
4
×86+5.75×(3.5-3
1
10

=
23
4
×86+5.75×(3.5-3.1)
=494.5+5.75×0.4
=494.5+2.3
=496.8
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