[MATH 1] Addition facts for 20

$$10\ +\ 2=................$$  

$$5+6=..............$$  

$$6+4+8=.................$$  

$$7+3+6=..................$$  

$$12\ and\ 7\ make\ .................$$  

$$11\ and\ 8\ make\ ...................$$  

$$15\ and\ 4\ make\ ..................$$  

$$14+.....................=19$$  

$$....................+12=18$$  

eleven and three is .......................