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Year 1 Measurements - Mass and Weight
We use scales to measure how much different things weigh - even ourselves!

Year 1 Measurements - Mass and Weight

In KS1 Maths, mass and weight show how heavy things are. Learn heavier and lighter, then use scales to read grams carefully and compare which object weighs more.

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Fascinating Fact:

Mass or weight tells how heavy something is. A pencil might weigh 10 g on the classroom scales.

In KS1 Maths, pupils compare how heavy objects are using words like heavier and lighter. They practise with balance and digital scales, line readings up to zero, and read whole grams to decide which object has the greater mass.

  • Mass/Weight: How heavy an object is when measured on scales.
  • Heavier/Lighter: Words used to compare which object has more or less mass.
  • Gram (g): A small unit used to measure mass in Year 1.
How do I read grams on a set of scales?

Make sure the scale starts at zero, place the object on the tray, then read the number the pointer or display shows in grams.

What is the difference between heavier and lighter?

Heavier means the object has more mass and will push the scale down more. Lighter means it has less mass.

Which scales do we use in Year 1?

Children use simple balance scales and easy digital scales to compare masses and read whole grams.

To see a larger image, click on the picture.
Question 1
Which is the heaviest weight?
1kg
2kg
4kg
5kg
The 5 kg is heavier than the others, and is larger too
Question 2
What weights do you see?
5kg, 4kg, 3kg
5kg, 2kg, 1kg
5kg, 12kg, 1kg
50kg, 20kg, 10kg
The largest weight is 5kg, the middle weight is 2kg and the smallest weight is 1kg
Question 3
What could be on this scale?
A large bar of chocolate
A cat
A car
A baby
A large bar of chocolate would weigh just under half a kilogram, the others would be more - especially a car!
Question 4
Do these pears weigh more than a kilogram?
Yes, they weigh 400kg
No, 400g is less than half a kilogram
Yes, they weigh 4kg
Yes, they weigh 40kg
They actually weigh less than half a kilogram!
Question 5
How many kilograms does this scale weigh up to?
10kg
5kg
1kg
50kg
The maximum weight on the scale is 5kg
Question 6
Which of the following would weigh about 1 kilogram?
4 bananas
1 strawberry
4 grapes
1 apple
4 bananas would be closer to 1 kg than all the others
Question 7
What could be on this scale?
A marble
A feather
An elephant
6 apples
6 apples could weigh just over 1 kg, the others would not
Question 8
How much is shown on the scale?
2kg
200g
200kg
20g
200g is less than half a kilogram, which is 500g
Question 9
How much are peppers?
£26.00 per kilogram
£260 per kilogram
26p per kilogram
£2.60 per kilogram
Fruit and vegetables sold by weight are priced per kilogram
Question 10
How much sugar might the girl use for a cake?
500g
500kg
5kg
5g
500g is also half a kilogram
Author:  Angela Smith (Primary School Teacher & KS1 Quiz Writer)

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