Fractions · tenths
What Is 9/10?
9/10 is nine tenths: 9 parts out of 10 equal parts.
9/10 means 9 out of 10 equal parts. The bottom number (10) says how many equal parts make the whole. The top number (9) says how many you have. As a decimal it's 0.9, and as a percent it's 90%.
9/10 in pictures
9/10 at a glance
| In words | nine tenths |
| As a decimal | 0.9 |
| As a percent | 90% |
| Simplest form | 9/10 is already in simplest form |
| Equal fractions | 18/20, 27/30, 36/40, 45/50 |
| Compared to one half | bigger than 1/2 |
| Left to make a whole | 1/10 |
Is 9/10 in simplest form?
No number bigger than 1 divides both 9 and 10, so 9/10 can't be simplified. It's as simple as it gets.
Fractions equal to 9/10
Multiply the top and bottom by the same number and the amount doesn't change: 9 × 2 = 18 and 10 × 2 = 20, so 9/10 = 18/20. Times 3 gives 27/30. In the bakery, that's the same pie with every slice cut in two, then in three.
More fractions equal to 9/10: 18/20, 27/30, 36/40, 45/50, 54/60. The equivalent fractions lesson shows why this always works.
Is 9/10 bigger than one half?
9/10 is bigger than 1/2. One half of 10 parts is 5, and 9/10 has 9, which is more. Next to its neighbors: 8/10 < 9/10 < 10/10.
9/10 in real life
Share the 20 into 10 equal groups: 20 ÷ 10 = 2 in each group. Take 9 groups: 2 × 9 = 18.
An hour has 60 minutes. 60 ÷ 10 = 6, and 6 × 9 = 54 minutes.
Cut into fifths, then halve each fifth. This is why tenths and fifths are such close friends.
Common mix-ups with 9/10
Swapping the numbers changes everything. 9/10 is less than one whole; 10/9 is more than one whole. The bottom number always says how many equal parts make up the whole.
A pie with 9 filled and 1 empty is not 9/1. That compares the filled part to the empty part. The bottom number counts all 10 parts, filled or not.
Play with 9/10
Saying a definition doesn't make it stick. Finding 9/10 on a pie, a cake and a number line, over and over, does.
The orders in this game keep coming back to 9/10
Free to play · no signup · works on phones, tablets and computers
9/10 FAQ
What is 9/10 as a decimal?
9/10 = 0.9. Divide the top by the bottom: 9 ÷ 10 = 0.9.
What is 9/10 as a percent?
9/10 is 90%. Percent means "out of 100", so work out 9 ÷ 10 × 100.
What fractions are equal to 9/10?
18/20, 27/30, 36/40, 45/50, 54/60 and many more. Multiply the top and bottom by the same number to make another.
How do you read 9/10 out loud?
Say "nine tenths".
Is the fraction game really free?
Yes. The whole game plays free in your browser, with no signup, no ads and no time limit. A Fraction Bakery app for iPhone is coming later, but the web game stays free.
Take the bakery with you, soon
A Fraction Bakery app for iPhone is on the way. The plan: offline play for the car, a parent report of which fractions have stuck, and the full bakery shelf of prizes. Until then, the whole game is free right here.
Coming soon on theApp Store