Mass
Which weighs more a ton of
feathers or a ton of bricks??
Explaining Mass
• Mass is how heavy something is.
• Mass is measured in grams (g), kilograms (kg)
and milligrams (mg).
• How many grams in a kilogram?
• How many milligrams in a gram?
▫ If you need help on this one, think how many
mm in a metre.
Tyson Fury – Boxer – 6 ft 9 – 116 kg
Tyson Fury – Boxer – 6 ft 9 – 116 kg
In your books
• Convert these from centimetres to
metres.
• Remember 1 centimetre=0.01 metres
• 1.
• 2.
• 3.
• 4.
• 5.
100 cm = ______ 6. 230 cm = ______
200 cm = ______ 7. 140 cm = ______
300 cm = ______ 8. 325 cm = ______
400 cm = ______ 9. 150 cm = ______
500 cm = ______ 10. 105 cm = ______
In your books
• Convert these from metres to centimetres.
•
•
•
•
•
1. 1 m = ______ 6. 2m 48 cm = ______
2. 2 m = ______ 7. 2m 92 cm = ______
3. 3 m = ______ 8. 4m 75 cm = ______
4. 4 m = ______ 9. 3m 32 cm = ______
5. 5 m = ______ 10.1m 50 cm = ______
Complete the table
kg
kg
(fraction) (decimal)
1 kg
1 kg
1 ½ kg
kg
0.75 kg
g
1000g
250 g
Mass Word Problems
•I am baking a cake and I
put 300g of flour in a bowl
and 200g of sugar. What is
the mass of the
ingredients?
•A baby is born weighing
3Kg. He puts on 200g every
week for four weeks – how
much does he then weigh?
•I sent two parcels to my
friend in Australia. One
parcel weighed 1kg and the
other 500g. What was the
mass of the two parcels?
•I was sent three presents for
my birthday! The presents
weighed 100g, 200g and 1kg.
What was the mass of all my
presents together?
•Talia and mark are in a
piggy back race. What is
their combined mass if
Talia is 28 kg and Mark is
double that?
•The total mass of the 9
girls in a netball team is
468kg. What is the
average mass of each
player?
•Find the cost of 1.5kg of
steak at $20/kg, 2kg of
sausages at $12/kg and
500g of mince at $10/kg