(a) How many groups are there if 1 is divided into groups of:
(i) 1/2; (ii) 1/3; (iii) 1/4; (iv) 1/5?
(b) How many groups are there if 1 is divided into groups of:
(i) 2/5; (ii) 3/5; (iii) 4/5; (iv) 1/5?
(c) How many groups are there if 1 is divided into groups of:
(i) 1+1/3; (ii)1+2/5; (iii) 1+3/4?
(d) How many groups are there if each of the following numbers is divided into groups of 2/3?
(i) 1 (ii) 2 (iii) 4/5 (iv) 1+1/3
In general, how would you calculate x ÷ a/b?
Anthony Or. Education Bureau, Hong Kong. (中文版：http://www.geogebratube.org/student/m14537)
orchiming@gmail.com