Part1(一) 基本运算(加减乘除、乘方、开方)11.加法相关符号: +
举例: 1 + 2 = 3 augend + addend = sum
相关词汇:addition 加法、plus sign 加号、plus symbol 加号、augend 被加数、addend 加数、sum 和
口语表达: One plus two equals three. 一加二等于三 。One is the augend, two is the addend, and three is the sum. 1是被加数,2是加数,3是和 。
The sum of one and two is three. 1与2的和是3 。If you add one and two, you get three. 1加上2 , 得到3 。We are doing an addition (operation). 我们在做加法(运算) 。22.减法相关符号: –
举例: 8 – 6 = 2 minuend -subtrahend = difference
相关词汇: subtraction 减法、minus sign 减号、minus symbol 减号、minuend 被减数、subtrahend 减数、difference 差
口语表达: Eight minus six equals two. 8减去6等于2 。
8 is the minuend, 6 is the subtrahend, and 2 is the difference. 8是被减数,6是减数,2是差 。8, subtract/deduct 6 gives you 2. 8减去6,得到2 。If you take 6 away from 8, you get/are left with 2. 8去掉6,得到/剩下2 。We are doing a subtraction (operation). 我们在做减法(运算) 。33.乘法相关符号:×
举例: 3 × 4 = 12; multiplier × multiplicand = product ; factor × factor = product
相关词汇: multiplication 乘法、multiplier 被乘数、multiplicand 乘数、factor因数、product 积
口语表达: Three times four equals twelve. 3乘以4等于12 。
12 is the product of 3 and 4. 12是3与4的积 。3 multiplied by 4 is 12. 3乘以4等于12 。44.除法相关符号: ÷
举例: 8 ÷ 2 = 4 10 ÷ 4 = 2…2 dividend ÷ divisor = quotient, remainder
相关词汇: division 除法、obelus 除号、dividend 被除数、divisor 除数、quotient 商、remainder 余数
口语表达: Eight divided by two equals four. 8除以2等于4 。
10 divided by 4 gives you 2 with a remainder of 2. 10除以4等于2,余数为2 。55.幂运算举例: bn base exponent = power
相关词汇: exponentiation 幂运算、power operation 指数运算、exponent 指数、base 底、power 幂
口语表达: bn 可以读作 b to the n-th power, b to the power of n 或者 b raised to the n-th power
当指数为2或3时,即 b2 和 b3 通常读作 b squared 和 b cubed
103 = 1000 可读作 10 cubed is 1,000. 10 to the third power is 1,000. 或 10 to the power of three is 1,000.66.开方运算
相关词汇: root 根、degree 次、radicand 被开方数、square root 平方根、cube root 立方根
口语表达:
The squared root of 9 is 3.
The cube root of 8 is 2.
读作 the n-th root of x x 的 n 次方根Part2(二) 基本计数方法(整数、小数、分数、科学计数法)71.整数举例: 123; 1234; 12345678
相关词汇: integer 整数、hundred 百、thousand 千、million 百万、billion 十亿、trillion 万亿
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