01 数字读法
0（零）zero/oh
零增长zero growth
零次zero times
零点zero hours
零度zero degrees
无重力zero gravity
内线501 extension 501 [five oh one]
10美元纸币8张eight $10 [ten dollar] bills
14人受伤Fourteen were injured.
100亿ten billion 10,000,000,000
10兆ten trillion 10,000,000,000,000
1,000兆a[one]quadrillion 1,000,000,000,000,000
100千兆a[one] quintillion
头班车the first train
清早我要首先做那件事。I will do that first thing in the morning.从右数第二个是我。I am second from the right.
第三次终于成功了。I finally made it on the third try.
1/2  a[one] half
1/3  a[one] third
2/3  two thirds
1/4  a[one] quarter/a[one] fourth
3/4  three quarters/three fourths
1/5  a[one] fifth
1/100 a[one] hundredth/a[one] one-hundredth
2 1/2  two and a half
7 5/8  seven and five eighths
7/5  seven fifths
5的倒数是1/5。The reciprocal of five is one fifth.
9.622  nine point six two two
0.15  zero point one five
7.28  billion. seven point two eight billion
+5    plus[positive] five
-9    minus[negative] nine
±6  plus(or) minus six
52 five squared/the square of five
43 four cubed/the cube of four
34 three to the fourth(power)
x2  x squared
x3  x cubed
x4  x to the fourth(power)
xn  x to the nth(power)
x-2  x to the minus second(power)
x1/2 x to the one half(power)
6的平方是36。The square of 6 is 36.
4的立方是64。The third power of 4 is 64./The cube of 4 is64.
2的4次方是16。The fourth power of 2 is 16./Two to the fourth(power) is sixteen.
某个数的n次方raise a number to the nth power
31/2  the square[second] root three/root three
81/3  the cube[third] root of eight
91/4  the fourth root of nine
x1/n  the nth root of x
log525  base-5 log of 25/ log of 25, base-5
log 100 common log of 100
loge 5  natural log of 5
7的阶乘7!  seven factorial
7的阶乘7!  seven factorial
7的阶乘7!  seven factorial
7的阶乘7!  seven factorial
个位ones
10位tens
100位hundreds
1，000位thousands
小数第一位the first decimal place
计算到小数第三位calculate to the third decimal place
伊丽莎白一世Elizabeth I[thE First]
伊丽莎白二世Elizabeth II[the Second]
第二次世界大战World War II[two]
第五章Chapter V[five]
第六节Section VI[six]
第一幕第3场Act I[one], Scene III[three]
1 I
2 II
3 III
4 IV
5 V
6 VI
7 VII
8 VIII
9 IX  10 X  11 XI  14 XIV 15 XV  20 XX  21 XXI  40 XL  50 L  100 C  500 D  600 DC  700 DCC  900 CM  1000 M  1500 MD  1999 MCMXCIX  2000 MM 2015 MMXV
圆周率pi(π)
sin600  sine sixty degrees 600 的正弦
cos300  cosine thirty degrees 300的余弦
tan450  tangent forty-five degrees 450的正切
实数real numbers
虚数imaginary numbers
复数complex numbers
偶数even numbers
奇数odd numbers
素数prime numbers
倍数multiples
最小公倍数LCM [the least common multiple]
约数divisors
最大公约数GCD [the greatest common divisor]
进制number systems
二进制the binary system
八进制base 8
10进制the decimal system
16进制base 16
02 数式读法
数数count
扳着手指数数count on one's fingers
从1数到10  count from one to ten
从100起倒数count backward from 100
你能数到多少个数  How high can you count?
倒计时  countdown
加法adition
加add
和sum
+（加号）plus/and
=（等号）equals/is/makes
2+3=5
Two plus three equals five.
Two plus three is five.
Two and three makes five.
Two and three is five.
3.5+
4.6=8.1
Three point five plus four point six equals eight point one.
1/2+2/3=1 1/6
A half plus two thirds equals one and a sixth.
9加3等于12。Add nine and three, and you get twelve.
5加8等于几？What is 5+8[five plus eight]?
9加5等于几？What does nine and five make?
减法subtraction
减subtract
差difference
-（减号）minus/less
10-9=1
Ten minus nine equals one.
Ten minus nine is one.equals不等于
Ten less nine is one.
1,352-681=671
One thousand three hundred (and) fifty-two minus six hundred (and) eighty-one equals six hundred (and) seventy-one.
3/4-1/4=1/2
Three fourths minus one fourth equals one half.
10-20=-10
Ten minus twenty equals negative ten.
3x-2y=6
Three x minus two y equals six.
12减3等于9。
If you take three from twelve, you get nine.
乘法multiplication
乘multiply
积product
x（乘号）multiplied by/times
3 x 5=15
Three multiplied by five equals fifteen.
Three times five equals fifteen.
Three times five is fifteen.
1/2 x 1/4=1/8
One half multiplied by one fourth equals one eighth.
3.5 x 2.1=7.35
Three point five multiplied by two point one equals seven point three five.
4 x (-2)=-8
Four times negative two is negative eight.
6乘4等于24。
If you multiply six by four, you get twenty-four.
5乘6的积为30。
The prosuct of five by six is thirty.
乘法表multiplication tables
5的乘法口诀the five times table
除法division
除divide
商quotient
余remainder
÷（除号）divided by/into
10÷2=5
Ten divided by two eauals five.
Ten divided by two is five.
Two into ten is five.
1,111÷11=101
One thousand, one hundred (and) eleven divided by eleven equals one hundred (and) one. 3/4÷1/2=1 1/2
Three fourths divided by one half equals one and a half.
8用2除等于4。
Divide eight by two, and you get four.
22÷7=3余1，22÷7=3 r1
Twenty-two divided by seven eauals three with a remainder of one.除开divisible
16能用2、4、和8除开
16 is divisible by 2, 4, and 8.
进位round up
未满10的以10计算
round up to the nearest ten
把小数点的数进位到整数
round up to the nearest whole number
小数点以后第3位进位
round up to the second decimal place
未满1元的零头按1元计算
round up to the nearest one yen
舍掉round down/drop omit
不足10的舍掉
round down to the nearest ten
未满1元的零头不计
round down to the nearest one yen
不足1000的舍掉
000's [three zeroes] omitted
四舍五入round off
不足10的四舍五入
round off to the nearest ten
小数点后的四舍五入
round off to the nearest whole number
小数后的数第4位四舍五入
round off to the third decimal place
代数algebra
未知数unknowns
变量variables
2x  two x
1/x  one over x
x/y  x over y
方程式equations
一[二]次方程式
a liner [quadric] equation
求解solve
解solution
公式formula
微分differenciation
积分integration
函数functions
数列sequences/progressions

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