小学三年级数学下册计算题练习题word版本
巡山小妖精
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2021年01月26日 12:40
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歌曲串烧-
一、口算。
3
×
10
=
80
×
40
=
18
×
5
=
40
×
60
=
30
÷
10
=
13
×
4
=
25
×
20
=
160
×
4
=
20
3÷
9
=
63
×
36
=
26
×
38
=
770
÷
5
=
300
÷
5
=
720
÷
9
=
16
×
6
=
720
÷
0
=
180
÷
20
=
0
÷
90
=
10
×
40
=
12
×
50
=
85
÷
5
=
57
÷
3
=
0
+
8
=
32
×
30
=
70
÷
5
=
25
×
4
=
15
×
6
=
630
÷
9
=
450
÷
5
=
12
×
40
=
240
÷
6
=
16
×
60
=
84
÷
42
=
600
-
50
=
500
×
3
=
0
×
930
=
27
×
30
=
84
÷
12
=
420
÷
3
=
910
÷
3
=
91
-
59
=
11
×70=
1000÷5=
75
÷
15
=
320
-
180
=
30
×
40= 40
+
580
=
560
÷
4=
95
÷
1
=
480
+
90
=
510
÷
7
=
200
÷
4
=
72
÷
4
=
8000÷2=
4000
÷
50
=
125
-
25
×
2
=
50
×
0
×
8
=
75
+
25
÷
5
=
32
÷
47
×
12
=
45
+
55
÷
5
=
70
×(
40
-
32
)=
90
÷
5
×
3
=
10
÷
10
×
30
=
6
×(
103
-
98
)=
7
+
3
×
0
=
51
-
4
×
6
=
420
÷2×8=
750
-(
70+80
)=
300÷2÷5=
二、笔算。
(乘法不用验算,除法要验算)
54
×
63
=
25
×
38
=
36
×
19
=
774
÷
8
=
508
÷
2
=
370
÷
5
=
19
×
47
=
900
÷
5
=
23
×
34
=
392
÷
4
=
360
×
5
=
32
×
68
=
696
÷
2
=
64
×
28
=
4
+
0.6= 7.3
6.5+4.7= 1.2-0.3= 4.6+2.4= 3.8+6.6=
三、估算。< br>238
÷
6
≈
89
×
30
≈
890
÷
9
≈
65
×
11
≈
53
×21
≈
÷
4
=
÷
3
=
-
2.9=
÷
3
≈
417
×
48
≈
43
÷
50
≈
417
×
11
≈
27
×
21
≈
38
÷
8
=
÷
6
=
10
-
0.7= 8.2-5=
÷
6
≈
753
×
22
≈
52
÷
60
≈
351
×
19
≈
45
×
21
≈
35
×
79
=
÷
4=
÷
5
≈
×
68
≈
÷
5
≈
×
19
≈
×
21
≈
882
809
56
820
630
458
876
32
459
76
84