Toggle Navigation
Games
Blog
Class PIN
Join for Free
Sign in
Toggle Navigation
Games
PIN
Join for Free
Blog
Pricing
Contact us
Help center
Sign in
Study
Adding and subtracting!
0
%
0
0
0
Back
Restart
4 + 4 =
8
Oops!
Okay!
16 - 10 =
6
Oops!
Okay!
52 + 25
77
Oops!
Okay!
13 - 5 =
8
Oops!
Okay!
8 + 3 =
11
Oops!
Okay!
43 + 15 =
58
Oops!
Okay!
50 - 40 =
10
Oops!
Okay!
61 - 21 =
40
Oops!
Okay!
20 + 30 =
50
Oops!
Okay!
28 + 35 =
63
Oops!
Okay!
54 - 12 =
42
Oops!
Okay!
78 - 35 =
43
Oops!
Okay!
70 + 10 =
80
Oops!
Okay!
40 - 20 =
20
Oops!
Okay!
23 - 15 =
8
Oops!
Okay!
44 + 22 =
66
Oops!
Okay!
Your experience on this site will be improved by allowing cookies.
Allow cookies