The document discusses measuring the length and width of shapes to the nearest half centimeter or millimeter. It explains that the length is the longest side and the width is the shortest side. Examples are provided of measuring lengths and widths to the half centimeter, along with noting what to do if the sizes are not exact measurements. The document also shows how to use a ruler to measure to the nearest millimeter by reading the finer markings.

1. Measuring
to the
nearest ½
cm or mm.

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

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

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

5. Measure length and width to the
nearest millimetre
0000000000
Most of the time, we use this side of our rulers for measuring.
If we turn them the other way round, we have millimetres.
0 0 0 0 0 0 0 0 0 0
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
0 0
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. 0000000
Measure the length and width of this
shape to the nearest millimetre
1. Measure the length
2. Measure the
width
The length is
The width is
92 mm
46 mm
0 0 0 0 0 0 0 0 0 0