Answer:
2
Step-by-step explanation:
so uh grab like 1 pen and another one...then place them together then count how many pens you have...1+1=2
so you now have 2 pens...
20, c
50-30=20 Go 50 down a number line from 50, you're at 0, then go back up 30. Where are you at? 20 Hope this helps! Have a good day! :)
