20. Length Talk About


1. What units of measurement would you use to measure the following distances? Would it be kilometres and metres (km and m), metres and centimetres (m and cm) or centimetres and millimetres (cm and mm)?


a) The distance between your house and the school b) The distance between your desk and the door of the classroom c) The distance travelled by a snail in 30 seconds d) The distance travelled by light in 1 second e) The distance you could throw a ball f) The distance you can stick out your tongue


2. Fill in the blanks in these sentences so that each of the sentences is accurate. a) There are b) A


millimetres in a centimetre. is 1


___ 100 of a metre.


c) A kilometre is made up of 1000 d) There are


e) There are 100000


Millimetres and Centimetres There are 10mm in 1cm, so:


0mm 10 20 30 . millimetres in a metre. in a kilometre.


1mm = 1 __


10cm


Strand: Measures 136


Curriculum Objectives: Select and use appropriate instruments of measurement;


rename measures of length;


estimate and measure the perimeter of regular and irregular shapes; use and interpret scales on maps and plans.


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