The “Addition and Subtraction” activity packet is designed to meet the curriculum expectations for the Ontario Grade 4 Mathematics. This packet has students review two and three digit addition and subtraction and introduces them to the addition and subtraction of four-digit numbers. Students are also taught/encouraged to estimate their answers for various addition and subtraction problems involving four-digit numbers. This packet has students:
- Add and subtract two-digit numbers, using a variety of mental strategies;
- Solve problems involving the addition and subtraction of four-digit numbers, using student-generated algorithms and standard algorithms;
- Use estimation when solving problems involving the addition and subtraction of whole numbers to help judge the reasonableness of a solution;
This packet includes 7 lessons as well as activity worksheets and answers for the worksheets. If you have any questions, please feel free to let me know.