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口算.110×4=8000×4=510-110=36×0×5=47×6≈70×5=1-47=58+38=5×7+6=62×3≈

题目详情
口算.
110×4=

8000×4=

5
10
-
1
10
=

36×0×5=

47×6≈
70×5= 1-
4
7
=
5
8
+
3
8
=
5×7+6= 62×3≈
口算.
110×4=

8000×4=

5
10
-
1
10
=

36×0×5=

47×6≈
70×5= 1-
4
7
=
5
8
+
3
8
=
5×7+6= 62×3≈
口算.
110×4=
8000×4=
5
10
-
1
10
=

36×0×5=
47×6≈口算.
110×4=

8000×4=

5
10
-
1
10
=

5
10
-
1
10
=
5
10
551010
1
10
=
1
10
111010
36×0×5=

47×6≈
70×5= 1-
4
7
=
5
8
+
3
8
=
5×7+6= 62×3≈70×5=1-
4
7
=
4
7
=
4
7
4477
5
8
+
3
8
=
5
8
+
3
8
=
5
8
5588
3
8
=
3
8
33885×7+6=62×3≈
▼优质解答
答案和解析
110×4=440,
8000×4=32000,

5
10
-
1
10
=
2
5

36×0×5=0,

47×6≈300,
70×5=350, 1-
4
7
=
3
7
5
8
+
3
8
=1,
5×7+6=41, 62×3≈180.
110×4=440,
8000×4=32000,
5
10
-
1
10
=
2
5

36×0×5=0,
47×6≈300, 110×4=440,110×4=440,
8000×4=32000,
8000×4=32000,
5
10
-
1
10
=
2
5

5
10
-
1
10
=
2
5
5
10
555101010-
1
10
=
2
5
1
10
111101010=
2
5
2
5
222555,
36×0×5=0,
36×0×5=0,
47×6≈300,
47×6≈300, 70×5=350, 1-
4
7
=
3
7
5
8
+
3
8
=1,
5×7+6=41, 62×3≈180. 70×5=350,70×5=350, 1-
4
7
=
3
7
1-
4
7
=
3
7
4
7
444777=
3
7
3
7
333777,
5
8
+
3
8
=1,
5
8
+
3
8
=1,
5
8
555888+
3
8
=1,
3
8
333888=1, 5×7+6=41,5×7+6=41, 62×3≈180.62×3≈180.