Units of measurement GM2.4 Core Plenary Choose the approximate answers to these conversions from the table. a 900 feet in metres b 5 ounces in grams c 30 pints in litres d 50 miles in kilometres e 300 grams in ounces f 5 kilograms in pounds g 22 pounds in kilograms Make up some other conversions whose answers are in the table. 2  4  6  8  9  10  11  15  16  20  22  24  30  32  36  40  45  50  60  80  100 120 150 300 500 Preamble A quick-fire activity to probe pupils’ recall of metric–imperial conversions, which are always found difficult. Using a wipe board will provide instant feedback on pupils’ particular difficulties. A topic like this needs several visits. Possible content Converting between metric/imperial units. Resources Wipe boards. It may also be useful to have flashcards showing the conversion factors, to act as cues. Solution/Notes a 300 b 150 c 15 d 80 e 10 f 11 g 10 Original Material © Cambridge University Press 2009 Original Material © Cambridge University Press 2009