Addition is when you get more stuff/things and adding it to your old stuff/things. For example, I had 5 apples but my friend gave 6 more apples than I will add. To make it simple make the numbers 10 first, than add the remaining numbers. So 5+5 is 10, I have 1 more apple left, so I add the 1 which is 10+1= 11. So my total number of apples will be 11.
Just some basic calculations
-1-
1+1=2
1+2=3
1+3=4
1+4=5
1+5=6
1+6=7
1+7=8
1+8=9
1+9=10
1+10=11
-2-
2+1=3
2+2=4
2+3=5
2+4=6
2+5=7
2+6=8
2+7=9
2+8=10
2+9=11
2+10=12
-3-
3+1=4
3+2=5
3+3=6
3+4=7
3+5=8
3+6=9
3+7=10
3+8=11
3+9=12
3+10=13
-4-
4+1=5
4+2=6
4+3=7
4+4=8
4+5=9
4+6=10
4+7=11
4+8=12
4+9=13
4+10=14
-5-
5+1=6
5+2=7
5+3=8
5+4=9
5+5=10
5+6=11
5+7=12
5+8=13
5+9=14
5+10=15
-6-
6+1=7
6+2=8
6+3=9
6+4=10
6+5=11
6+6=12
6+7=13
6+8=14
6+9=15
6+10=16
-7-
7+1=8
7+2=9
7+3=10
7+4=11
7+5=12
7+6=13
7+7=14
7+8=15
7+9=16
7+10=17
-8-
8+1=9
8+2=10
8+3=11
8+4=12
8+5=13
8+6=14
8+7=15
8+8=16
8+9=17
8+10=18
-9-
9+1=10
9+2=11
9+3=12
9+4=13
9+5=14
9+6=15
9+7=16
9+8=17
9+9=18
9+10=19
-10-
10+1=11
10+2=12
