Fractions · tenths

What Is 10/10?

10/10 is ten tenths: all 10 parts, which makes exactly one whole.

The short answer

10/10 = 1. The bottom number says the whole is cut into 10 equal parts, and the top says you have all 10 of them. As a decimal that's 1, and as a percent it's 100%.

10/10 in pictures

Pie: 10 of 10 slices
Cake: 10 of 10 parts
Cookies: 10 of 10 on the tray
01/102/103/104/105/106/107/108/109/101
Number line: ten tenths

10/10 at a glance

In wordsten tenths
As a decimal1
As a percent100%
Simplest form1 (one whole)
Equal fractions2/2, 3/3, 4/4, 5/5
Compared to one halfbigger than 1/2
Left to make a wholeNothing: it is the whole

Why 10/10 equals 1

Top and bottom are both 10, so divide both by 10: 10 ÷ 10 = 1 and 10 ÷ 10 = 1. That leaves 1/1, which is just 1.

Fractions equal to 10/10

Multiply the top and bottom by the same number and the amount doesn't change: 10 × 2 = 20 and 10 × 2 = 20, so 10/10 = 20/20. Times 3 gives 30/30. In the bakery, that's the same pie with every slice cut in two, then in three.

More fractions equal to 10/10: 2/2, 3/3, 4/4, 5/5, 6/6. The equivalent fractions lesson shows why this always works.

Is 10/10 bigger than one half?

10/10 is bigger than 1/2. 10/10 is a whole, so it's twice as much as one half.

10/10 in real life

10/10 of 20 muffins on a rack

Share the 20 into 10 equal groups: 20 ÷ 10 = 2 in each group. Take 10 groups: 2 × 10 = 20.

10/10 of an hour

An hour has 60 minutes. 60 ÷ 10 = 6, and 6 × 10 = 60 minutes.

Cutting tenths

Cut into fifths, then halve each fifth. This is why tenths and fifths are such close friends.

Common mix-ups with 10/10

It's not bigger than 1

10/10 looks like a big fraction, but it's exactly one whole: all 10 parts of 10. Any fraction with the same top and bottom equals 1.

Play with 10/10

Saying a definition doesn't make it stick. Finding 10/10 on a pie, a cake and a number line, over and over, does.

The orders in this game keep coming back to 10/10

Free to play · no signup · works on phones, tablets and computers

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Quick quiz

10/10 FAQ

What is 10/10 as a decimal?

10/10 = 1. Divide the top by the bottom: 10 ÷ 10 = 1.

What is 10/10 as a percent?

10/10 is 100%. Percent means "out of 100", so work out 10 ÷ 10 × 100.

What fractions are equal to 10/10?

2/2, 3/3, 4/4, 5/5, 6/6 and many more. Multiply the top and bottom by the same number to make another.

How do you read 10/10 out loud?

Say "ten 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