4+4= 3+3= 2+2= Learn all the basic facts off by heart.
6+6= 1+1= 5+5= Ask someone to test you.
8+8= 0+0= 7+7= 9+9= etc... Time yourself. Try for 10 in 10 seconds!
Now try take aways!
8-4= 10-5= 18-9= Do these with some spoons, pegs or toys.
14-7= 4-2= 2-1= Make up some number stories.
0-0= 12-6= 16-8= 6-3= etc... Another word for take away is subtract.