30+50=80-5=75 

 Clever. Faster than what I did for sure 

 (20+40)+(7+8) => 60+15=75

Hbu? 

 Omg. Yes. I do the first one. Thank you.. thought I was the only one.  

 So much faster than “carrying the 1” lol 

 I used my fingers for some of it 🙈🥹🫂 75 

 20 + 40, 7 + 8, 60 + 15 

 Same 

 2+4=6; 8+8=16-1=15; 6+1=7; 7 and 5 (second char from 15) = 75 

 25 + 50 = 75 

 7+8=15   4+2+1(from the 15)=7 so 75 
My math tricks are nil 😂. 

 2+4 that's 6, 7+8 is more then 10 so 6+1 that's 7
8+7 that's 8+2=10 that leaves a 5

75 👍 

 Or sometimes I go 30+50-5 😅 

 7+8=5 
5+2=7
75
that was it