TN Samacheer class 7 maths New Syllabus Term 3 Chapter 2 percentage and simple interest Exercise 2.1 example 2.1to 2.29 fully solved7th standard std maths tamil #TNMathsClass7 #TNSamacheer #TNClass7 #class 7 maths in tamil #class7 maths #class 7 maths term 1 #class 7 maths chapter 1 Tamilnadu Samacheer New syllabus 7th std Maths Term 3 ch 2 solution 2020 - 2021