Addition plus
20
15
13
14
10
12
15
16
17
20
13
14
20
19
46
10
9
48
54
17
18
15
74
2
14
18
9
13
20
17
19
20
5
121
489
11
15
454
4546454
14
20
21
18
19
5
Quiz Review Timeline +
Our quizzes are rigorously reviewed, monitored and continuously updated by our expert board to maintain accuracy, relevance, and timeliness.
Wait!
Here's an interesting quiz for you.