倒计时:
150秒
剩余: 50题
成绩: 0分
关卡: 1
8 + 7 = 15
9 + 4 = 13
4 + 2 = 6
9 + 5 = 14
9 + 0 = 9
7 + 4 = 11
5 + 1 = 6
8 + 3 = 11
8 + 1 = 9
9 + 9 = 18
8 + 0 = 8
7 + 3 = 10
6 + 2 = 8
2 + 1 = 3
9 + 7 = 16
6 + 6 = 12
4 + 1 = 5
2 + 0 = 2
7 + 7 = 14
5 + 0 = 5
9 + 8 = 17
8 + 8 = 16
8 + 7 = 15
6 + 1 = 7
8 + 1 = 9
2 + 0 = 2
7 + 5 = 12
7 + 0 = 7
9 + 0 = 9
8 + 8 = 16
3 + 1 = 4
9 + 1 = 10
7 + 2 = 9
7 + 3 = 10
5 + 4 = 9
4 + 4 = 8
7 + 0 = 7
7 + 6 = 13
8 + 0 = 8
9 + 0 = 9
5 + 0 = 5
6 + 3 = 9
9 + 8 = 17
2 + 1 = 3
4 + 4 = 8
3 + 3 = 6
5 + 4 = 9
7 + 5 = 12
6 + 4 = 10
5 + 0 = 5
通过解答算术题,输入正确的键盘数字来发射子弹,击退来袭的小怪兽。