A teacher buys two bags of oranges for her students. Each bag has 5 oranges. The teacher gives 7 oranges to her students. How many oranges are left?
https://talkandcomment.com/p/ee1328f51c04a31631a3d92b (voice note)
Select all of the groups of coins that show 50¢.
https://talkandcomment.com/p/4a9cd5af2a663253c979f413 (voice note)