Lesson

Can you multiply decimal numbers by 10, 100 or 1000?

Find the value of 29.34 \times 100.

Worked Solution

Idea summary

We can use a place value table to multiply and divide decimals by powers of 10.

If we are comparing two lengths, but they are written in different units we will need to change one of them to perform any calculations.

Convert 25.83 millimetres to centimetres. Write your answer as a decimal.

Worked Solution

Idea summary

Remember the following length conversions:

1\text{ cm}=10\text{ mm}

1\text{ m}=100\text{ cm}

1\text{ km}=1000\text{ m}

Convert between units of length in two steps.

Convert 6.22\text{ km} to centimetres.

Worked Solution

Idea summary

We can use the following conversion chart to convert between units of measurement.

selects and uses the appropriate unit and device to measure lengths and distances, calculates perimeters, and converts between units of length