狠狠撸

fractions zero integers negative numbers positive numbers multiplication conceptual understanding arithmetic operations addition subtraction hundreds numbers multiply repeated addition number tables concptual understading repeated subtraction math divide bus public transport system one-ways 2 wheelers automobiles brt flyovers builder lobby traffic jam traffic vehicles cars pollution place value units thousands number blocks decimal number system tens division 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