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Level 3-4 Shapes - Measuring Mass
Joshua buys half a kilo of cheese and Oliver buys 250 grams of cheese.

Level 3-4 Shapes - Measuring Mass

In your KS3 Maths lessons on shapes, you'll get to do some cool measurements! You're already familiar with measuring areas, distances (like width or length), and volumes or capacities. Now, let's talk about measuring weight or mass.

Technically, 'weight' and 'mass' have differences, but for everyday use, they're pretty much the same. In maths, we measure both in grams (g), kilograms (kg), and tonnes. Easy tip: 1,000 grams make a kilogram, and 1,000 kilograms make a tonne.

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1.
Ruby has 3 kilos of sugar, Megan has half as much as Ruby and Ellie has half as much as Megan. How much sugar does Ellie have?
1.5 k
1.0 k
750 g
500 g
Don't forget that k = kilo and g = gram
2.
A lorry is delivering to shops and at the start of the day the lorry contains 10 tonnes of potatoes. The first shop takes 500 kilos of potatoes and the second shop takes 2.5 tonnes of potatoes. How many potatoes are left on the lorry?
5.0 tonnes
7.0 tonnes
7.5 tonnes
9.5 tonnes
500kg = 0.5 tonnes so 10 - 0.5 - 2.5 = 7 tonnes
3.
Emily weighs 4.5 kilos more than Sophie. What is the difference in their weights in grams?
450
2,250
4,500
9,000
Multiply 4.5 x 1,000 for the answer
4.
How many grams are there in 13 kilograms?
130
1,300
13,000
130,000
Just multiply 13 x 1,000 for the answer
5.
What is the name given to 100 kilograms?
Megagram
Mellagram
Monogram
There is no name for 100 kilograms
Metric weights go up in thousands, not hundreds
6.
Joshua buys half a kilo of cheese and Oliver buys 250 grams of cheese. What is the difference between these two amounts?
150 g
200 g
250 g
300 g
Half a kilo = 500 grams. The abbreviation g = grams
7.
Peter has collected a number of 1p coins and he finds that one coin weighs 313 grams. He then weighs all the coins together and they weigh 666 grams. Approximately how much are the pennies worth?
50p
£1.00
£1.50
£2.00
666g ÷ 313 = 199.8 which we can round up to 200. So, 200 coins each worth 1p means that Peter's collection is worth £2.00
8.
What is the name given to 1,000 kilograms?
tun
ton
tonne
tunne
A 'ton' is the name given to 2,240 pounds in imperial measurement
9.
How many grams are there in one kilogram?
10
100
1,000
1,000,000
'Kilo' means 'thousand'
10.
Charlotte buys two jars of jam each weighing 400 grams, two bags of sugar each weighing a kilo and three tubs of yoghurt each weighing 100 grams. What is the total weight of her shopping?
2.9 kilos
3.1 kilos
3.3 kilos
4.0 kilos
Make sure that you understand that a kilo is 1,000 grams and that 400 grams is 0.4 of a kilo
You can find more about this topic by visiting BBC Bitesize - Weight and Mass

Author:  Frank Evans

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