Count, order, compare and represent whole numbers & common fractions. Keywords, place values, grouping with 3 digits, expanded form, counting backwards, symbols to compare numbers, greater than, smaller than & equal to, estimation by rounding, correct use of calculator, using column method to add & subtract, inverse operations, common fractions, numerator and denominator, grouping and diagrams of fractions, equivalent fractions, simplest form, comparing numerators & denominators