Idea 4of 23Builds onRead a decimal by its last place
Decimals live between whole numbers
Where does 3.62 sit on a number line?
Today you'll discover
- which whole numbers 3.62 is between
- which tenths it is between
- how to zoom in to find hundredths
Think firstA number line from 3 to 4, marked in tenths
3.62 is somewhere on this line. Between which two tenths does it sit?
Decide first, then press Next. Read the tenths marks under the line.
A number line from 3 to 4 marked in tenths. A dot appears at 3.62, just past 3.6. Then the line zooms in to the tenth from 3.6 to 3.7, cut into 10 hundredths, and the marks 3.61, 3.62 and so on are labelled. The last step shows a line from 28 to 29.
See the whole ideathe big idea and the key word, in one place
The big idea
3.62 sits between the wholes 3 and 4, and closer in, between the tenths 3.6 and 3.7.
Zoom in, step by step
3.62 is between 3 and 4. Closer in, between 3.6 and 3.7. At hundredths, it has its own mark.
- Wholes3 and 4
- Tenths3.6 and 3.7
- Hundredths3.62
Where it goes nextThese benchmarks, the tenths either side, are exactly the two numbers you choose between when you round.
Key word
- benchmark
- a well-known number on the line, like a whole or a tenth, used to place other numbers
Ready to use it?
- Place a decimal on a number line.
- Name the tenths a decimal sits between.