Se numbers 2013

Numberscardinal, ordinal, Roman, decimals, fractions

Wednesday, April 17, 13

cardinal numbers

zero=0 sixteen=16 twenty thousand=20,000one=1 seventeen=17 a/one hundred thousand=100,000two=2 eighteen=18 a/one million=1,000,000three=3 nineteen=19 ten million=10,000,000four=4 twenty=20 five hundred million=500,000,000five=5 twenty-one=21 a/one billion=1,000,000,000six=6 thirty=30 fifty billion=50,000,000,000seven=7 forty=40 a/one trillion=1,000,000,000,000eight=8 fifty=50nine=9 sixty=60ten=10 seventy=70eleven=11 eighty=80twelve=12 ninety=90thirteen=13 a/one hundred=100fourteen=14 a/one thousand=1,000fifteen=15 ten thousand=10,000

Cardinal numbers are called 基数 in Japanese.


cardinal numbers

Ichiro Suzuki

Keisuke Honda

Yukiko Ueno


ordinal numbersOrdinal numbers are called 序数 in Japanese.

first=1st second=2ndthird=3rd*fourth=4thfifth=5thsixth=6thseventh=7theighth=8thninth=9thtenth=10theleventh=11thtwelfth=12th thirteenth=13thfourteenth=14thfifteenth=15thsixteenth=16th

*forth=前へ・先へ　fourth=4th

twentieth=20ththirtieth=30thfortieth=40thfiftieth=50thsixtieth=60thseventieth=70theightieth=80thninetieth=90thone hundredth=100th


ordinal numbers


Roman NumeralsRoman numerals are called ローマ数字 in Japanese.

one=I seventeen=XVII four hundred=CDtwo=II eighteen=XVIII five hundred=Dthree=III nineteen=XVIX six hundred=DCfour=IV twenty=XX seven hundred=DCCfive=V twenty-one=XXI nine hundred=CMsix=VI twenty-five=XXV a/one thousand=Mseven=VII thirty=XXX two thousand=MMeight=VIII forty=XLnine=IX forty-one=XLIten=X fifty=Leleven=XI sixty=LX

twelve=XII seventy=LXXthirteen=XIII eighty=LXXXfourteen=XIV ninety=XCfifteen=XV a/one hundred=Csixteen=XVI two hundred=CC


Roman Numerals


decimalsDecimals are called 小数 in Japanese.

1.1= one point one

2.5= two point five

.5= point five

.75=point seven five

.08=point oh eight / point zero eight

.03= point oh three / point zero three

3.14159= three point one four one five nine

77.6= seventy-seven point six

37.0= thirty seven point oh

98.6= ninety eight point six


fractionsFractions are called 分数 in Japanese.

½=a/one half ⅙=a/one sixth

⅓=a/one third ⅚=five sixths

⅔=two thirds ⅛=an/one eighth

¼=a/one fourth ⅜=three eighths

¾=three fourths ⅝=five eighths

⅕=a/one fifth ⅞=seven eighths

⅖=two fifths ⅟₁₀=a/one tenth

⅗=three fifths 1½=one and a/one half

⅘=four fifths 1¾=one and three fourths


fractions in mathfraction with

“x” We say...

X/2 x over 2

X/3 x over 3

X/4 x over 4

X/5 x over 5


終了！！


Se numbers 2013

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