Question

1+1= 2+2= 3+3= 4+4= 5+5= 6+6= 7+7= 8+8= 9+9= 10+10= 1+2+3+4+5+6+7+8+9+10=

Answer 1

1+1=2 2+2=4 3+3=6 4+4=8 5+5=10 6+6=12 7+7=14 8+8=16 9+9=18 10+10=20 1+2+3+4+5+6+7+8+9+10=55

Answer 2

1+2=3
3+3=6
6+4=10
10+5=15
15+6=21
21+7=28
28+8=36
36+9=45
45+10=55

Answer 3

The calculations you've provided are as follows:

1 + 1 = 2 2 + 2 = 4 3 + 3 = 6 4 + 4 = 8 5 + 5 = 10 6 + 6 = 12 7 + 7 = 14 8 + 8 = 16 9 + 9 = 18 10 + 10 = 20

The sum of the numbers from 1 to 10 is calculated as follows: 1 + 2 + 3 + 4 + 5 + 6 + 7 + 8 + 9 + 10 = 55