知识点挑题 - 小学数学 - 优优班--学霸训练营

2．口算：
1
3
+
1
4
=
3
4
+
1
8
=
1
3
-
1
6
=
2
5
+
1
5
=
5
7
+
1
6
= 1-
5
13
=
3
8
-
1
7
=
2
5
+
3
10
=

难度：较易

解析收藏试题篮
3．直接写得数
3
2
5
+0.3=
3
4
×
5
6
=
1
4
：
1
3
=
7
10
×10×
3
14
=
1-
2
5
+
3
5
= 1÷
3
2
×
2
3
=
1
6
×
2
3
÷
1
3
= 7×
3
4
÷7×
3
4
=
9-0.9= 72÷0.4=

难度：较易

解析收藏试题篮
4．直接写出得数．
3.14×5= 0.375+0.625= 3.14×7= 1.25×8=
3
4
+
1
2
= 100÷50%= 3.14×8= 18.84÷6=
1÷
1
6
=
1
3
-
1
4
=

难度：较易

解析收藏试题篮
5．一根2米长的绳子用去
3
4
米，还剩下；如果用去它的
3
4
，还剩下米．

难度：较易

解析收藏试题篮
6．直接写出得数．
113-98= 0.47+0.34= 0.25×4= 1-0.01=
1
6
+
5
6
= 1-
3
8
=
5
9
+
8
9
=
21
23
-
17
23
=
1
8
+
5
8
=
5
6
-
1
6
=
9
14
-
5
14
=
11
25
+
9
25
=

难度：较易

解析收藏试题篮
7．直接写出得数：
1
10
+
3
10
=
7
9
-
5
9
=
1
4
-
1
5
=
2
3
-
1
6
=
1-
5
18
=
7
12
-
1
6
= 1-
3
7
-
2
7
=
1
2
+
1
3
+
1
4
=

难度：较易

解析收藏试题篮
8．直接写得数
1
4
+
2
4
= 3.2+6.3=
4
7
+
2
7
=
5
8
-
3
8
=
80×60=
5
10
-
1
10
= 3.8-2.7= 1-
5
6
=

难度：较易

解析收藏试题篮
9．
口算我能行

6-
7
10
=
1
2
-
1
3
= 2-
5
6
= 1-7÷9=
（
5
17
+
5
9
）×0=
5
7
+
7
8
+
2
7
= 5-
6
9
-
3
9
=

难度：较易

解析收藏试题篮
10．直接写出得数．
0.25×16= 15.7÷3.14= 12.8×2.5+12.8×7.5=
2
3
×
3
4
=
4
5
-
3
4
= 0.42+3.29+0.58+5.71=
0.389×101-0.389=
51
57
÷
17
19
=
1
10
+0.25+65%=

难度：较易

解析收藏试题篮

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