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$9300-7100= $
$260×3= $
$370+530= $
$60÷9= $
$120×4= $
$5000×9= $
$21×3×0= $
$54÷6= $
$250-90= $
$140÷7= $
$280-140= $
$560÷8= $
$180÷3= $
$630÷9= $
$170÷2= $
$58+22= $
$378×6\approx $
$607+295\approx $
$490×7\approx $
$298+709\approx $
$889-301\approx $
$260×3= $
$370+530= $
$60÷9= $
$120×4= $
$5000×9= $
$21×3×0= $
$54÷6= $
$250-90= $
$140÷7= $
$280-140= $
$560÷8= $
$180÷3= $
$630÷9= $
$170÷2= $
$58+22= $
$378×6\approx $
$607+295\approx $
$490×7\approx $
$298+709\approx $
$889-301\approx $
答案
2200
780
900
6……6
480
45000
0
9
160
20
140
70
60
70
85
80
2400
900
3500
1000
600
780
900
6……6
480
45000
0
9
160
20
140
70
60
70
85
80
2400
900
3500
1000
600
1. 填＞、＜或= 。
92504
50140
28906
620300
100000
1034200
999999
10000
10234
87087
634987
1000003
1210000
92504
＜
10360050140
＜
6314028906
＞
28890620300
＞
307300100000
＞
999981034200
＜
1043200999999
＜
100000010000
＞
999910234
＜
1024387087
＞
78078634987
＞
987651000003
＜
10000301210000
＞
1100000答案
1.
92504 ＜ 103600
50140 ＜ 63140
28906 ＞ 28890
620300 ＞ 307300
100000 ＞ 99998
1034200 ＜ 1043200
999999 ＜ 1000000
10000 ＞ 9999
10234 ＜ 10243
87087 ＞ 78078
634987 ＞ 98765
1000003 ＜ 1000030
1210000 ＞ 1100000
92504 ＜ 103600
50140 ＜ 63140
28906 ＞ 28890
620300 ＞ 307300
100000 ＞ 99998
1034200 ＜ 1043200
999999 ＜ 1000000
10000 ＞ 9999
10234 ＜ 10243
87087 ＞ 78078
634987 ＞ 98765
1000003 ＜ 1000030
1210000 ＞ 1100000
2. 写出相邻的数。
( ) 100000 ( )
( ) 999999 ( )
( ) 6730034 ( )
( ) 495700 ( )
( ) 10000 ( )
( ) 1000000 ( )
( ) 100000 ( )
( ) 999999 ( )
( ) 6730034 ( )
( ) 495700 ( )
( ) 10000 ( )
( ) 1000000 ( )
答案
2.
99999 100000 100001
999998 999999 1000000
6730033 6730034 6730035
495699 495700 495701
9999 10000 10001
999999 1000000 1000001
99999 100000 100001
999998 999999 1000000
6730033 6730034 6730035
495699 495700 495701
9999 10000 10001
999999 1000000 1000001
