2024年4月3日发(作者：)

加号

（+）：plus; sum of;is increased by

减号（-）：minus; is reduced by; is decreased by

除号（÷）：divided by;quotient

乘号（×）：times;product of

等于（=）：is equal to;equals;is;gives;results in;becomes

未知数（n,x,y,z）：a number

例子：n+2: a number is increased by 2

10÷n: 10 divided by a number

5×n=15： the product of five and a number is fifteen

(20÷n)-2=10： twenty divided by a number,reduced by two is ten

20÷(n-2)=10: twenty, divided by a number,reduced by two is ten

8n+6=11:the product of eight and a number,plus six gives eleven

8×(n+6)=11:the product of eight,and a number plus six equals eleven

12÷（n+4）=2:twelve divided by a number which is increased by four becomes two

x÷2+3=x-7:a number divided by two,plus three is the same number minus seven

(x+4)²=709+5(x):a number increased by four,all squared,equals seven hundred nine plus fiv

e times the number

大于0：positive 小数点：decimal

小于0：negative 倒数：reciprocal;multiplicative inverse

基数：basis 比例：ratio

指数：exponent 百分数：percent

科学计数法：scientific notation 平方根：square root

有理数：rational number 估算：estimate

自然数：natural number 平面直角坐标系：Cartesian Plane

整数：integer x轴：X axis

分数：fraction Y轴：Y axis

变量：variable 周长：perimeter

方程：equation 体积：volume

勾股定理：pythagorean relationship 面积：area

斜边：hypotenuse 多边形：polygon

角：angle 直角：right angle (圆)周长：circumference

四边形：quadrilateral 直径：diameter

平行四边形：parallelogram 半径：radius

平行：paralle 棱镜：prism

三角形：triangle 圆柱：cylinder

矩形：rectangle 立方体：cube

菱形：rhombus 表面积：surface area

梯形：trapezoid

正方形：square

放大：enlargement

缩小：reduction

比例尺：scale

区域：region

统计：statistic

可能性：probability

数据：data(复数形式，一般使用复数)

平均数：mean

中位数：median

众数：mode

极差：range

锐角：acute angle

高：altitude;height

顶点：vertex

二项式：binomial

平分线：bisector

容量：capacity

系数：coefficient

seven multipled by ten to the power of minus seven

7 * (10^(minus 7)) = 7.0 × 10

-7

seven multipled by ten to the power of negative seven

seven times ten to the negative seventh power

6.02×10

23

six point zero two times ten to the power of twenty-three