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(2013•德阳模拟)口算3.72+0.5=7-1.96=2.4×0.5=0.39÷1.3=21÷37=0.2×0.1=3.7÷10%=1.3×1.25×8=9.2÷2.3=5-223=18+38=712-512=13-16=13+14=12×514=

题目详情
(2013•德阳模拟)
口算
3.72+0.5=
7-1.96= 2.4×0.5= 0.39÷1.3=
21÷
3
7
=
0.2×0.1= 3.7÷10%= 1.3×1.25×8=
9.2÷2.3= 5-2
2
3
=
1
8
+
3
8
=
7
12
-
5
12
=
1
3
-
1
6
=
1
3
+
1
4
=
12×5
1
4
=
口算
3.72+0.5=
7-1.96= 2.4×0.5= 0.39÷1.3=
21÷
3
7
=
0.2×0.1= 3.7÷10%= 1.3×1.25×8=
9.2÷2.3= 5-2
2
3
=
1
8
+
3
8
=
7
12
-
5
12
=
1
3
-
1
6
=
1
3
+
1
4
=
12×5
1
4
=
口算
3.72+0.5= 7-1.96= 2.4×0.5= 0.39÷1.3=口算
3.72+0.5=
7-1.96=2.4×0.5=0.39÷1.3= 21÷
3
7
=
0.2×0.1= 3.7÷10%= 1.3×1.25×8=21÷
3
7
=
3
7
=
3
7
33770.2×0.1=3.7÷10%=1.3×1.25×8= 9.2÷2.3= 5-2
2
3
=
1
8
+
3
8
=
7
12
-
5
12
=
9.2÷2.3=5-2
2
3
=
2
3
=
2
3
2233
1
8
+
3
8
=
1
8
+
3
8
=
1
8
1188
3
8
=
3
8
3388
7
12
-
5
12
=
7
12
-
5
12
=
7
12
771212
5
12
=
5
12
551212
1
3
-
1
6
=
1
3
+
1
4
=
12×5
1
4
=
1
3
-
1
6
=
1
3
-
1
6
=
1
3
1133
1
6
=
1
6
1166
1
3
+
1
4
=
1
3
+
1
4
=
1
3
1133
1
4
=
1
4
114412×5
1
4
=
1
4
=
1
4
1144
▼优质解答
答案和解析
3.72+0.5=4.22 7-1.96=5.04 2.4×0.5=1.2 0.39÷1.3=0.3
21÷
3
7
=49
0.2×0.1=0.02 3.7÷10%=37 1.3×1.25×8=13
9.2÷2.3=4 5-2
2
3
=2
1
3
1
8
+
3
8
=
1
2
7
12
-
5
12
=
1
6
1
3
-
1
6
=
1
6
1
3
+
1
4
=
7
12
12×5
1
4
=63
3.72+0.5=4.22 7-1.96=5.04 2.4×0.5=1.2 0.39÷1.3=0.3 3.72+0.5=4.223.72+0.5=4.22 7-1.96=5.047-1.96=5.04 2.4×0.5=1.22.4×0.5=1.2 0.39÷1.3=0.30.39÷1.3=0.3 21÷
3
7
=49
0.2×0.1=0.02 3.7÷10%=37 1.3×1.25×8=13 21÷
3
7
=49
21÷
3
7
=49
3
7
333777=49 0.2×0.1=0.020.2×0.1=0.02 3.7÷10%=373.7÷10%=37 1.3×1.25×8=131.3×1.25×8=13 9.2÷2.3=4 5-2
2
3
=2
1
3
1
8
+
3
8
=
1
2
7
12
-
5
12
=
1
6
9.2÷2.3=49.2÷2.3=4 5-2
2
3
=2
1
3
5-2
2
3
=2
1
3
2
3
222333=2
1
3
1
3
111333
1
8
+
3
8
=
1
2
1
8
+
3
8
=
1
2
1
8
111888+
3
8
=
1
2
3
8
333888=
1
2
1
2
111222
7
12
-
5
12
=
1
6
7
12
-
5
12
=
1
6
7
12
777121212-
5
12
=
1
6
5
12
555121212=
1
6
1
6
111666
1
3
-
1
6
=
1
6
1
3
+
1
4
=
7
12
12×5
1
4
=63
1
3
-
1
6
=
1
6
1
3
-
1
6
=
1
6
1
3
111333-
1
6
=
1
6
1
6
111666=
1
6
1
6
111666
1
3
+
1
4
=
7
12
1
3
+
1
4
=
7
12
1
3
111333+
1
4
=
7
12
1
4
111444=
7
12
7
12
777121212 12×5
1
4
=63
12×5
1
4
=63
1
4
111444=63