1. Measuring to the nearest ½ cm or mm.

2. Measure the length and width of this shape to the nearest ½ cm
The width is the shortest side
The length is the longest side

3. Measure the length and width of this shape to the nearest ½ cm
2. Measure the width
9½ cm
The length is
4½ cm
The width is

4. Measure the length and width of this shape to the nearest ½ cm
What if they are not exact sizes?
1. Measure the length
2. Measure the width
8½ cm
To the nearest half cm, the length is
3 cm
To the nearest half cm, the width is

5. Measure length and width to the nearest millimetre
Most of the time, we use this side of our rulers for measuring. If we turn them the other way round, we have millimetres.
Notice that the numbers go up in 10’s.

6. Measure length and width to the nearest millimetre
Here is a close-up of the millimetres markings
Each 10 millimetres is marked.
Each millimetre is also marked.
This means that we can be more accurate with our measuring. We can now measure objects to the nearest millimetre!

7. Measure the length and width of this shape to the nearest millimetre
2. Measure the width
92 mm
The length is
46 mm
The width is