Idea 2of 23Builds onTenths: one whole cut into 10
Hundredths: each tenth cut into 10
What does the second digit after the decimal point count?
Today you'll discover
- how many hundredths make one tenth
- how to read 2 tenths and 5 hundredths
- how to write any shaded part
Think firstEach strip cut into 10 small squares
Each of the 10 strips is cut into 10 equal squares. How many small squares make the whole?
Decide first, then press Next. Count full strips first, then single squares.
A square marked 1 whole, cut into 100 small squares. One small square is shaded and labelled 0.01. Then one full strip of 10 squares is outlined: 1 tenth = 10 hundredths. Then 2 strips and 5 squares are shaded: 0.25. The last step shows 4 strips and 6 squares.
See the whole ideathe big idea and the key word, in one place
The big idea
The second place after the point counts hundredths. Ten hundredths make one tenth.
Two ways to count 0.25
Count strips, then squares: 2 tenths and 5 hundredths. Or count every small square: 25 hundredths. Both are 0.25.
- Strips2 tenths
- Squares5 hundredths
- All squares25 hundredths
Easy to get wrongA hundredth is smaller than a tenth, although 100 is bigger than 10. More parts means smaller parts.
Key word
- hundredth
- one of 100 equal parts of a whole, written 0.01 or 1/100
Ready to use it?
- Write the shaded part of a hundredths grid as a decimal.
- Say how many hundredths make a tenth.