Addition and Subtraction Check

2 + 1 = 3
10 + 1 = 11
7 + 1 = 8
1 + 1 = 2
9 + 1 = 10
5 + 1 = 6
4 + 1 = 5
8 + 1 = 9
6 + 1 = 7
3 + 1 = 4
Tests to test the knowledge of addition and subtraction in the range of 10, 20 and 100
You are asked 10 questions for addition and subtraction in a scatter without answers. The questions are not repeated

Addition within 20