Units of Measurement


1. Find out which of the following items is the lightest. First estimate the weight of each, then select the appropriate unit and weigh them using the appropriate instrument. a) compass


b) lunchbox e) piece of fruit c) schoolbag f) bottle of paint g) maths book 2. Put these items in order, starting with the heaviest item.


d) calculator h) yourself


600g d) 3


400g


3. Can you write these as grams? a) 2 kilograms


– 4 kilogram


b) 1


e) 235 ____


2.5kg


– 2 kilogram


1000 kilograms


300g c) 1


4. Choose the correct unit. a) Does a bag of flour weigh 1 gram or 1 kilogram? b) Does a tin of beans weigh 400 grams or 400 kilograms? c) Does a feather weigh 1 gram or 1 kilogram? d) Does a school chair weigh 5 grams or 5 kilograms? e) Does a bag of coal weigh 25 grams or 25 kilograms? f) Does a bicycle weigh 10 grams or 10 kilograms? g) Does a mobile phone weigh 150 grams or 150 kilograms?


5. Find 6 books in your classroom of different weights.


a) Estimate how heavy each one is. Put them in order of estimated weight from the heaviest to the lightest.


b) Weigh them and record your answers in as many forms as possible. For example: 21


– 2kg or 2500g or 2.5kg or 2kg 500g.


6. What do these weigh? a) b)


c) d)


– 4 kilogram


f) 31


– 2 kilograms


1kg


Weight


183


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