10. 3D Measurement

Lesson

If we can multiply and divide by powers of 10, that will help us in this lesson. Let's try a problem to practice.

Find the value of 6.41 \times 1000.

Worked Solution

Idea summary

The powers of 10 to remember are: 10, \, 100, \, 1000 and 10\,000.

When we multiply or divide by a power of 10, each digit of our number moves up or down by as many place value positions as there are zeros.

This video shows some strategies for converting between units of capacity.

Convert 4920 millilitres to litres.

Worked Solution

Idea summary

When you convert from a larger unit to a smaller unit (e.g. \text{L} to \text{mL}), you multiply.

When you convert from a smaller unit to a larger unit (e.g.\text{ mL} to \text{L}), you divide.