Rushal Thaker

fractions zero negative numbers positive numbers integers multiplication arithmetic operations addition subtraction conceptual understanding pmc save rivers sewage river pollution floods untreated sewage activism pune municipal corporation water carrying capacity treatment plant save earth flash floods stp encroachment biological oxygen demand unlike fractions equivalent fractions equal fractions arithmetic operations on fractions naming fractions comparing farctions comparing integers number line associative law multiplicative inverse properties reciprocal distributive law commutative law basic algebra division divide math repeated subtraction concptual understading number tables repeated addition multiply numbers hundreds tens decimal number system number blocks thousands units place value pollution cars vehicles traffic traffic jam builder lobby flyovers brt automobiles 2 wheelers one-ways public transport system bus