Maths Commenting

  

Today I commented on hosea's blog post about questions
Aunwers 

Number one is 12 how did i get it well I just skiped counted in 3's
Number two is 110 how did I get it well I know that 80 + 20 is 100 so then I justed added 10 to make a 110Number three is 1/2 becuse you just said it in the textNumber four is 77 how? i did it like this 110 - 30 = 90 ( so far ) 1 - 4 = -3 (negatave 3)= 77