Explore the following questions with the applet.
(a) The weight of 1 bag of rice is 2/3 kg, what is the weight of 4 bags of rice? How to calculate 2/3 × 4?
(b) The weight of 1 bag of rice is 4 kg, what is the weight of 2/3 bag of rice? How to calculate 4 × 2/3 ?
(c) The weight of 1 bag of rice is 4 kg, what is the weight of 1⅓ bags of rice? How to calculate 4 ×1⅓ ?
(d) The weight of 1 bag of rice is 4/5 kg, what is the weight of 2/3 bags of rice? How to calculate 4/5 × 2/3 ?
(e) The weight of 1 bag of rice is 1¾ kg, what is the weight of 2⅔ bags of rice? How to calculate 1¾ × 2⅔ ?
Anthony C.M. Or. Education Bureau, Hong Kong.