Tenths (age 8+)
Count up and down in hundredths; recognise that hundredths arise when dividing an object by 100 or dividing tenths by 10
What a learner can do afterwards
- Count from 3/100 to 12/100 in hundredths
- Explain that 1/10 ÷ 10 = 1/100
- Place several hundredths on a number line between 0 and 1/10
The lesson
You already know tenths, so hundredths will feel familiar. If you cut a whole into 100 equal parts instead of 10, each part is called a hundredth. We write it as 1/100.
Ravi has £1, which is the same as 100 pennies. He spends 8 pennies, so he has spent 8 out of 100 parts of his pound. That is 8/100.
Counting hundredths works just like counting whole numbers, only the bottom number stays 100. After 9/100 comes 10/100, then 11/100, and so on, all the way up to 100/100, which is one whole.
A hundredth is one part when a whole is split into 100 equal pieces, and you count them one by one just like whole numbers.
Watch it
Where it sits
Where this leads
Jobs that lean on this skill. Follow one to see everything it is built on.
8 questions wait behind this lesson, each with its answer explained. Every answer feeds the sky: stars light as they are learned, and dim when it is time to come back.