1. Counting large numbers
HUNDRED TO TRILLION

2. HUNDRED ひゃく 百 NUMBER + HYAKU 200 = ni hyaku 400 = yon hyaku Examples:
Exceptions:
100
HYAKU
300
SAN-BYAKU
600
ROP-PYAKU
800
HAP-PYAKU

3. THOUSAND せん 千 NUMBER + SEN 5000 = go sen 7000 = nana sen Examples:
Exceptions:
1000
SEN　（IS-SEN within larger numbers)
3000
SAN-ZEN
8000
HAS-SEN

4. 10 THOUSAND まん 万 NUMBER + MAN 20 000 = ni man 60 000 = roku man
Examples:
= ni man
= roku man
= kyū man

5. How would you say these numbers?
150
25000
90909
3620
17800
358
7650
1165
11111
Hyaku go jū
Ni man go sen
Kyū man kyū hyaku kyū
San zen rop-pyaku ni jū
Ichi man nana sen hap-pyaku
San-byaku go jū hachi
Nana sen rop-pyaku go jū
Sen hyaku roku jū go
Ichi man is-sen hyaku jū ichi

6. LARGER NUMBERS 100 thousand 100 000 Jū man 1 million 1 000 000
Hyaku man
10 million
Sen man
100 million
Ichi oku
1 billion
Jū oku
10 billion
Hyaku oku
100 billion
Sen oku
1 trillion
It-chō

7. DECIMALS てん 点 NUMBER + TEN + NUMBER 0.25 = rei ten ni go
Examples:
= rei ten ni go
1.527 = ichi ten go ni nana

8. FRACTIONS ぶん 分 1/2 = ni bun no ichi 1/4 = yon bun no ichi
BOTTOM NUMBER + BUN NO + TOP NUMBER
Examples:
1/2 = ni bun no ichi
1/4 = yon bun no ichi
2/3 = san bun no ni