北师大版三年级下册数学--计算题专项
温柔似野鬼°
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2021年01月26日 12:42
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科比名言-
数学三年级计算复习题
一、口算。
84
÷
42
=
600
-
50
=
500
×
3
=
0
×
930
=
27
×
30
=
84
÷
12
=
420
÷
3
=
910
÷
3
=
320
-
180
=
30
×
40= 40
+
580
=
560
÷
4=
72
÷
4
=
8000÷2=
102
+
20
=
4000
÷
50
=
125
-
25
×
2
=
50
×
0
×
8
=
75
+
25
÷
5
=
32
÷
4
×
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
=
774
÷
8
=
508
÷
2
=
19
×
47
=
900
÷
5
=
23
×
34
=
392
÷
4
=
360
×
5
=
4
+
0.6= 7.3
-
2.9=
10
-
0.7=
8.2-5=
6.5+4.7= 1.2-0.3= 4.6+2.4=
3.8+6.6=
三、估算。
238
÷
6
≈
876
÷
3
≈
417
÷
6
≈
753
÷
5
≈
890
÷
9
≈
459
÷
50
≈
417
÷
60
≈
351
÷
5
≈
65
×
11
≈
76
×
11
≈
27
×
19
≈
45
×
19
≈
53
×
21
≈
84
×
21
≈
38
×
21
≈
35
×
21
≈
1