Hard math
what is 40 + 30?
70
What is 20 +20
40
100 + 100
200
40 + 40
80
what is 12 + 10?
22
What is 30 +50?
80
What is 23 +23
46
500 + 500
1000
46 +46
92
12 + 11
23
What is 20 + 45?
65
What is 29 +29
58
400 +400
800
42 + 42
84
12 + 13
24
What is 45 + 45?
90
what is 24 +24
48
600 +600
1200
44 + 44
88
12 + 14
25
What is 90 +90
180
What is 25 +25
50
300 +300
600
48 + 48
96
12 + 100
112