代数 ALGEBRA
1.数论
natural number 自然数 positive number 正数 negative number 负数odd integer, odd number 奇数 even integer, even number 偶数 integer, whole number 整数 positive whole number 正整数 negative whole number 负整数consecutive number 连续整数real number, rational number 实数,有理数 irrational无理数 inverse 倒数composite number 合数 e.g. 4,6,8,9,10,12,14,15 prime number 质数 e.g. 2,3,5,7,11,13,15 reciprocal 倒数 common divisor 公约数 multiple 倍数 common multiple 公倍数 factor因子common factor 公因子ordinary scale, decimal scale 十进制 nonnegative 非负的 tens 十位 units 个位mode 众数 mean平均数 median中值 common ratio 公比
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