Addition (1) This is about adding one-digit numbers. This includes numbers 0 through 9. SubhaSanthaSri published on June 22, 2020 Stacked 1/5 0+4= 4 5 6 7 2/5 0+1= 1 2 3 4 3/5 0+5= 5 6 7 8 4/5 0+2= 2 3 4 5 5/5 0+3= 3 4 5 6