Idea 22of 24Builds onSplit the parts: same amount, new nameMultiply the top and bottom by the same number
Tenths and hundredths as decimals
How is 3/10 written as a decimal?
Today you'll discover
- what one column and one square are
- why 3/10 = 30/100
- how to write hundredths as a decimal
Think firstA grid of 100 squares, some shaded
What fraction of the grid is shaded?
Decide first, then press Next. Count the full columns, then the squares.
A hundred grid with three full columns shaded. The columns are outlined as tenths, then 3/10 = 30/100 and 0.3 = 0.30 are written. Then a grid with 47 squares shaded, named 47/100 and 0.47. The last step shows a grid with only 8 squares shaded.
See the whole ideathe big idea and the key word, in one place
The big idea
One tenth is 1/10 or 0.1, and one hundredth is 1/100 or 0.01.
Easy to get wrong0.8 and 0.08 are not the same. 0.8 is 8 tenths (80 squares); 0.08 is 8 hundredths (8 squares).
MoneyA dime is 1/10 of a dollar: $0.10. A quarter is 25/100 of a dollar: $0.25.
Key words
- tenth
- one of 10 equal parts of a whole: 1/10, written 0.1
- hundredth
- one of 100 equal parts of a whole: 1/100, written 0.01
Ready to use it?
- Write tenths and hundredths as decimals.
- Shade a decimal on a hundred grid.