Idea 24of 24Builds onPercent means out of 100Multiply the top and bottom by the same number
One amount, three names: fraction, decimal, percent
How are 3/4, 0.75 and 75% the same?
Today you'll discover
- how to split 100 squares into fourths
- how to rename 3/4 in hundredths
- the percents of common fractions
Think first3/4 of the grid is shaded
Which decimal names 3/4 of the grid?
Decide first, then press Next. Rename the fraction out of 100.
A hundred grid with three of its four 25-square corners shaded and 3/4 in a box above. The four parts are outlined with 25 in each, then 3/4 = 75/100 and 0.75 are written, then 75%. The last step shows 1/5 of the grid shaded.
See the whole ideathe big idea and the key word, in one place
The big idea
A fraction, a decimal and a percent can name one amount: 3/4 = 0.75 = 75%.
Worth knowing1/2 = 0.5 = 50%. 1/4 = 0.25 = 25%. 3/4 = 0.75 = 75%. 1/5 = 0.2 = 20%. 1/10 = 0.1 = 10%.
Easy to get wrong3/4 is not 0.34. The digits of a fraction do not become the digits of its decimal: rename it in hundredths.
Key word
- benchmark percents
- the percents of fractions worth knowing: 1/2 = 50%, 1/4 = 25%, 3/4 = 75%, 1/5 = 20%
Ready to use it?
- Write a fraction as a decimal and a percent.
- Match equal fractions, decimals and percents.