I like this idea Interactive Smartboard Money Activities, also available in Canadian coins.
Third Grade Math Money Lesson - Real world math
The importance of real world math! A peek inside all the skills students gain with one activity. Check writing, decimal operations, money management and
math, money - Free Printable: Do I Have Enough Money? Worksheet for graders - from Mama's Learning Corner
A bingo game to help your students practice coin recognition and counting money.
Adding Coins Bingo Cards - Up to 30 Unique Cards! Have fun reviewing coin addition with BINGO. Print & Play! Holiday and Canadian versions available at Mrs. Brosseau's Binder.