Addition and subtraction facts

This task is about adding and subtracting basic facts.
plus-sign.png     equals-sign-md.png     pink-label-subtraction-sign-md.png
Write the answers to each of the following calculations.

Question 1Change answer

a)  i)    3 + 5 = 
     ii)   6 + 4 = 
     iii)  8 + 6 = 
     iv)  7 + 4 = 
     v)   9 + 5 = 

Question 1Change answer

b)  i)     8 - 4 = 
     ii)    9 - 3 = 
     iii) 16 - 4 = 
     iv) 12 - 5 = 
     v)  15 - 9 =