subtractionchapter

noun
UK /səbˈtrækʃən ˈtʃæptə/
US /səbˈtrækʃən ˈtʃæptər/

A subtraction chapter is a part of a math book that teaches you how to take one number away from another.

We finished the subtraction chapter and now we can take away numbers up to twenty.


OTHER MEANINGS

2. A section of a textbook that explains how to find the difference between amounts.

The teacher assigned the subtraction chapter for homework on Tuesday.

3. A stage in a course where learners practice removing quantities from a group.

After the subtraction chapter, the class moved on to multiplication.

4. A part of a workbook focused on exercises about taking away.

She completed every problem in the subtraction chapter before lunch.