Number system

This CTET Paper 2 chapter builds Number system for future Classes VI-VIII maths teachers: Hindu-Arabic place value; the ladder natural-whole-integer-rational-irrational-real; expanded form; Indian and International naming; whole-number properties; integers on the number line; fractions-decimals-percentages as representations; factors, multiples, primes, HCF and LCM; and classroom pedagogy from concrete to abstract with misconception repair. Sibling topics Algebra, Ratio, Geometry, Mensuration, Data Handling and broad Maths pedagogy stay one-line contrasts only.