Formula deep page
Column Subtraction
Subtract ones first, then tens (borrow if top < bottom)
This formula belongs to the chapter "Give and Take" in Class 2 Mathematics (Maths Magic). Use it after identifying the right variables, matching the chapter context, and writing the substitution clearly.
How to use it
- Identify the quantity you need to find.
- Check the related variables and units from the question.
- Substitute values carefully into the formula.
- Simplify step by step and write the final statement.
Worked cue
54-28: ones=4<8 so borrow; 14-8=6; tens=(5-1)-2=2; answer=26