Simple
Subtraction
Subtraction
There were 1 red hat and 1 blue hat. How many hats are there altogether?
1+1=2
There were 5 red hats and 5 blue hats. How many hat are there altogether?
5+5=10 There are 10 hats
There were 6 red hats and 3 blue hats. How many hats are there altogether?
6+3=9
There were 4 red hats and 1 blue hat. How many hats are there altogether?
4+1=5
There were 2 red hats and 2 blue hats. How many hats are there altogether?
2+2=4