Formula deep page
Column Subtraction
Subtract ones first, then tens, then hundreds
This formula belongs to the chapter "Give and Take" in Class 3 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
503 - 248 = 255 (3<8: borrow; 13-8=5; 0-1-4: borrow; 10-5=5; 5-1-2=2)