二、解决问题
★信息窗1-3
建议用时:6分钟
实际用时:分钟
7×4 =
5×3 =
24÷6 =
35÷7 =
6×6 =
29÷8 =
8×5 =
53÷9 =
9×9 =
34÷8 =
80+40 =
1600+400 =
6000+700 =
400-100 =
76+20 =
57+20 =
70-3 =
25-18 =
81+10 =
73-25 =
28+32 =
19+80 =
199+54 =
92+50 =
266+354 =
900+600 =
400+8000 =
8000-5000 =
900+900 =
110-30 =
400-150 =
592+100 =
90+109 =
640-160 =
610-400 =
57+600 =
570-190 =
160+40 =
270+30 =
182+360 =
2800-2000 =
60+60 =
4500-500 =
130-70 =
2000-400 =

7×4 = 28
5×3 = 15
24÷6 = 4
35÷7 = 5
6×6 = 36
29÷8 = 3……5
8×5 = 40
53÷9 = 5……8
9×9 = 81
34÷8 = 4……2
80+40 = 120
1600+400 = 2000
6000+700 = 6700
400-100 = 300
76+20 = 96
57+20 = 77
70-3 = 67
25-18 = 7
81+10 = 91
73-25 = 48
28+32 = 60
19+80 = 99
199+54 = 253
92+50 = 142
266+354 = 620
900+600 = 1500
400+8000 = 8400
8000-5000 = 3000
900+900 = 1800
110-30 = 80
400-150 = 250
592+100 = 692
90+109 = 199
640-160 = 480
610-400 = 210
57+600 = 657
570-190 = 380
160+40 = 200
270+30 = 300
182+360 = 542
2800-2000 = 800
60+60 = 120
4500-500 = 4000
130-70 = 60
2000-400 = 1600

拓展园地
请按照下列图形的规律，补全最后一个图形。

答：白色三角形顺时针移动到正方形左下的小正方形区域内，蓝色五角星顺时针移动到正方形左侧中间的小三角形区域内。