This product includes 24 different task cards, an answer sheet, and a key.
This will help your students practice rounding to the nearest 10 and nearest 100, and then subtract their estimates. I like to use this product as an activity in small groups, whole class, and as a scoot. After we have completed this activity, I add it to my Math Zone centers as a review game for the end of year testing.
My students as well as my team teachers students have loved this activity, and I hope your students will too.
You can also purchase similar products in my TPT store.
Estimating Sums: https://www.teacherspayteachers.com/Product/Estimate-Sums-Estimating-Sums-Task-Cards-and-Scoot-3513823
Estimating Sums and Differences Bundle: https://www.teacherspayteachers.com/Product/Estimating-Sums-and-Differences-Task-Cards-and-Scoot-Bundle-3513897