![Janitor Jane](https://data.thuvientienganh.com/images/244/janitor-jane.jpg)
Thư Viện Tiếng Anh
Thư viện tài liệu tiếng Anh miễn phí
Subject: Addition
![Janitor Jane](https://data.thuvientienganh.com/images/244/janitor-jane.jpg)
![Subtraction with Regrouping: Octopus Math](https://data.thuvientienganh.com/images/244/subtraction-regrouping-octopus-second.jpg)
Subtraction with Regrouping: Octopus Math
![Making Change at the Toy Store](https://data.thuvientienganh.com/images/244/making-change-toy-store-second.jpg)
Making Change at the Toy Store
![Multiplication: Add & Multiply Starfish](https://data.thuvientienganh.com/images/244/multiplication-starfish-second.jpg)
Multiplication: Add & Multiply Starfish
![Math Mosaic](https://data.thuvientienganh.com/images/244/math-mosaic-2-second.jpg)
Math Mosaic
![Addition and Subtraction: Math Mosaic 1](https://data.thuvientienganh.com/images/244/math-mosaic-1-second.jpg)
Addition and Subtraction: Math Mosaic 1
![Connect the Dots: Practice Skip Counting by Fours!](https://data.thuvientienganh.com/images/244/skip-count-dot-to-dot-III.jpg)
Connect the Dots: Practice Skip Counting by Fours!
![Connect the Dots: Practice Skip Counting by Threes](https://data.thuvientienganh.com/images/244/skip-count-dot-to-dot-II.jpg)
Connect the Dots: Practice Skip Counting by Threes
![Tidy Sum 1000](https://data.thuvientienganh.com/images/244/tidy-sum-1000.jpg)
Tidy Sum 1000
![Tidy Sum 100](https://data.thuvientienganh.com/images/244/tidy-sum-100.jpg)
Tidy Sum 100
![Addition Puzzle: Impossible Sum](https://data.thuvientienganh.com/images/244/impossible-sums.jpg)
Addition Puzzle: Impossible Sum
![Double Digits! Practice Vertical Addition with Regrouping 11](https://data.thuvientienganh.com/images/244/double-digits-practice-vertical-addition-11.jpg)
Double Digits! Practice Vertical Addition with Regrouping 11
![Double Digits! Practice Vertical Addition with Regrouping 10](https://data.thuvientienganh.com/images/244/double-digits-practice-vertical-addition-10.jpg)
Double Digits! Practice Vertical Addition with Regrouping 10
![Double Digits! Practice Vertical Addition with Regrouping 9](https://data.thuvientienganh.com/images/244/double-digits-practice-vertical-addition-9.jpg)
Double Digits! Practice Vertical Addition with Regrouping 9
![Double Digits! Practice Vertical Addition with Regrouping 17](https://data.thuvientienganh.com/images/244/double-digits-practice-vertical-addition-17.jpg)
Double Digits! Practice Vertical Addition with Regrouping 17
![Double Digits! Practice Vertical Addition with Regrouping 7](https://data.thuvientienganh.com/images/244/double-digits-practice-vertical-addition-7.jpg)
Double Digits! Practice Vertical Addition with Regrouping 7
![Double Digits! Practice Vertical Addition with Regrouping 16](https://data.thuvientienganh.com/images/244/double-digits-practice-vertical-addition-16.jpg)
Double Digits! Practice Vertical Addition with Regrouping 16
![Double Digits! Practice Vertical Addition with Regrouping 6](https://data.thuvientienganh.com/images/244/double-digits-practice-vertical-addition-6.jpg)