早教吧 育儿知识 作业答案 考试题库 百科 知识分享

口算.100-7=17+8=60÷8=25×4=600×5=42÷6=510×7≈2000×8=78−48=14+24=1-611=17+67=

题目详情
口算.
100-7=

17+8=

60÷8=

25×4=
600×5= 42÷6= 510×7≈ 2000×8=
7
8
4
8
=
1
4
+
2
4
=
1-
6
11
=
1
7
+
6
7
=
口算.
100-7=

17+8=

60÷8=

25×4=
600×5= 42÷6= 510×7≈ 2000×8=
7
8
4
8
=
1
4
+
2
4
=
1-
6
11
=
1
7
+
6
7
=
口算.
100-7=
17+8=
60÷8=
25×4=口算.
100-7=

17+8=

60÷8=

25×4=
600×5= 42÷6= 510×7≈ 2000×8=600×5=42÷6=510×7≈2000×8=
7
8
4
8
=
1
4
+
2
4
=
1-
6
11
=
1
7
+
6
7
=
7
8
4
8
=
7
8
4
8
=
7
8
7788
4
8
4488
1
4
+
2
4
=
1
4
+
2
4
=
1
4
1144
2
4
22441-
6
11
=
6
11
=
6
11
661111
1
7
+
6
7
=
1
7
+
6
7
=
1
7
1177
6
7
6677
▼优质解答
答案和解析

100-7=93,

17+8=25,

60÷8=7…4,

25×4=100,
600×5=3000, 42÷6=7, 510×7≈3500, 2000×8=16000,
7
8
4
8
=
3
8
1
4
+
2
4
=
3
4
1-
6
11
=
5
11
1
7
+
6
7
=1.

100-7=93,
17+8=25,
60÷8=7…4,
25×4=100,
100-7=93,
100-7=93,
17+8=25,
17+8=25,
60÷8=7…4,
60÷8=7…4,
25×4=100,
25×4=100, 600×5=3000, 42÷6=7, 510×7≈3500, 2000×8=16000, 600×5=3000,600×5=3000, 42÷6=7,42÷6=7, 510×7≈3500,510×7≈3500, 2000×8=16000,2000×8=16000,
7
8
4
8
=
3
8
1
4
+
2
4
=
3
4
1-
6
11
=
5
11
1
7
+
6
7
=1.
7
8
4
8
=
3
8
7
8
4
8
=
3
8
7
8
777888−
4
8
444888=
3
8
3
8
333888,
1
4
+
2
4
=
3
4
1
4
+
2
4
=
3
4
1
4
111444+
2
4
222444=
3
4
3
4
333444, 1-
6
11
=
5
11
1-
6
11
=
5
11
6
11
666111111=
5
11
5
11
555111111,
1
7
+
6
7
=1.
1
7
+
6
7
=1.
1
7
111777+
6
7
666777=1.