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Japanese Numbers · Day 1 of 20

One to ten, twice

Why Japanese has two sets of small numbers

Japanese has two ways of counting to ten and you need both from the first day. One set is for reading numbers off a page, the other is for counting objects when you do not know the right counter. Learning them as one thing is the mistake; learning them as two jobs takes about ten minutes.

The reading set

This is what you say for a number itself: a price, a phone number, a bus route:

1
ichi
one
2
ni
two
3
san
three
4
yon / shi
four
5
go
five
6
roku
six
7
nana / shichi
seven
8
hachi
eight
9
kyū / ku
nine
10
ten
Why it works

Four, seven and nine each have two readings, and that is not a stylistic choice you get to make. よん and なな are the safe defaults when you are saying a number out loud; し and しち are used inside fixed expressions like 四月 and 七時. Getting this wrong is the single most common beginner mistake with numbers, and it is worth over-learning on day one: **default to よん, なな, きゅう** and let the exceptions be taught to you one at a time.

The counting set

This is for counting things when you do not know the counter, up to ten only:

1 thing
hitotsu
one
2 things
futatsu
two
3 things
mittsu
three
4 things
yottsu
four
5 things
itsutsu
five
6 things
muttsu
six
7 things
nanatsu
seven
8 things
yattsu
eight
9 things
kokonotsu
nine
10 things
ten
Why it works

This set stops at ten and has no eleven. That is not an oversight, it is the whole design: it exists as the escape hatch for when you do not know the proper counter for something, and beyond ten you are expected to know it. In a shop, ふたつ ください will get you two of almost anything without you having to work out whether a bread roll takes 個 or 本.

Using them today

Four sentences that cover most of day one:

hitotsu kudasai.
One of those, please.
Point, then say it. This works in every shop in Japan.
futatsu onegai shimasu.
Two, please.
Slightly softer than ください. Both are fine.
ichi, ni, san.
One, two, three.
Counting out loud, starting a photo, a countdown.
bangō wa zero, hachi, zero desu.
The number is zero, eight, zero.
Digits are read one at a time. ゼロ is normal; れい is the formal alternative.
Why it works

Notice that the counting set takes no particle and no counter: ひとつ ください is complete. That is what makes it useful before you have learned anything else. The reading set behaves differently and needs a counter attached to it, which is what the rest of this course is about.

hitotsu kudasai.
One of those, please.
yon · nana · kyū
the safe readings for 4, 7, 9
zero
zero

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