Whatâs Inside: Twelve focused chapters cover partâwhole and sharing situations, equivalent fractions and simplest form, comparing and ordering, adding and subtracting fractions, multiplying and dividing fractions and mixed numbers, proportions and scaling, fractionâdecimalâpercent conversions, decimal place value with rounding and estimation, adding and subtracting decimals, multiplying and dividing decimals, and mixed applications that blend multiple skills. Clean layouts, scaffolded difficulty