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Fraction Division: a ÷ b

(a) How many groups are there if 12 is divided into groups of:   (i) 3;  (ii) 4; (iii) 5? (b) How many groups are there if 10 is divided into groups of 4? (c) How many groups are there if 5 is divided into groups of 3? (d) How many groups are there if 3 is divided into groups of 5? (e) How many groups are there if 2 is divided into groups of 4? (f) How many groups are there if 1 is divided into groups of 3? In general, how would you calculate a ÷ b ?
Anthony Or. GeoGebra Institute of Hong Kong. (中文版:http://www.geogebratube.org/student/m14538) orchiming@gmail.com