MathBook+
Addition
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MathBook+
1
2
=
4
5
6
7
8
9
0
1
2
3
4
5
6
7
8
9
0
Addition
×
Level 1
10+10
5/10 points
Level 1
10+10
Level 2
100+100
Level 3
1000+1000
Level 4
10000+10000
Results
×
0
0
1
0
0
1
2
3
4
5
Results
×
0
4149d1b0-645a-4289-95b4-adbf1bb5a4bd
1