Watch the video before you start your work. It will help you to remember how to calculate your work.
Group 1 - Subtraction within 999 page 8. Complete Q. 3, 4 & 5.
Group 2 - Subtraction within 100. Complete 2nd half of page (last 15 questions).
Group 3 - Subtraction (2 digit) page 4. Complete Q. 3 & 4.
Group 4 - Subtraction within 20. Page 31 complete 2nd half of page.