三年级下册估算题
-
238
÷
6
≈
876
÷
3
≈
417
÷
6
≈
753
÷
5
≈
89
×
30
≈
32
×
48
≈
43
×
22
≈
52
×
68
≈
890
÷
9
≈
459
÷
50
≈
417
÷
60
≈
351
÷
5
≈
65
×
11
≈
76
53
×
21
≈
84
989
÷
9
≈
1010
1210
÷
30
≈
<
/p>
795
÷
20
≈
89
84
×
91
≈
558
22
×
99
≈
41
p>
81
×
92
≈
p>
99
×
11
≈
27
×
21
≈
38
÷
20
≈
×
84
≈
79
×
11
≈
718
÷
80
≈
91
×
99
≈
898
×
9
≈
612
×
19
≈
45
×
21
≈
35
÷
5
≈
18
×
81
≈
412
÷
9
≈
812
×
91
≈
121
÷
30
≈
p>
18
÷
20
≈
510
×
19
≈
×
21
≈
×
19
≈
÷
2
≈
÷
9
≈
×
11
≈
×
89
≈
÷
5
≈
623
66