很多中国学生都觉得AEIS考试中AEIS数学有不少题目都不会做。因为大部分同学对这些AEIS数学符号都比较陌生,因此而被难倒。
Mathematical symbols 数学符号
01. +: plus 加号;正号
“1+1”读作:one plus one
02. -: minus; negative 减号;负号
“2-1”读作:two minus one
“-3”读作:minus three或negative three
“2-(-3)”读作:two minus negative three
03. ±: plus-minus sign 正负号
“±1” 读作:plus or minus one
04. ×: multiplied by ; times 乘号
“2×3” 读作:two multiplied by three 或 two times three
05. ÷: divided by 除号
“4÷2”读作:four divided by two
06. =: equals; is equal to 等于号
“1+1=2”读作:One plus one equals two. 或 One plus one is equal to two.
07. ≠: is not equal to 不等于号
“a≠b”读作:a is not equal to b
08. ≌: congruent to 全等(两个图形形状相同、大小相等)
“△ABC≌△DEF”读作:Triangle ABC is congruent to Triangle DEF.
09. ≈: approximately equal to 约等于号
“3×3≈10” 读作:Three multiplied by three is approximately equal to ten.
10. <: is less than 小于号
“1<2”读作 One is less than two.
11. >: is greater than 大于号
“2>1”读作:Two is greater than one.
12. ≮: is not less than 不小于号
“3≮2”读作:Three is not less than two.
13. ≯: is not greater than 不大于号
“2≯4” 读作:Two is not greater than four.
14. ≤: is less than or equal to 小于或等于号
“2≤3”读作:Two is less than or equal to three.
15. ≥: is greater than or equal to 大于或等于号
“5≥4”读作:Five is greater than or equal to four.
16. %: percent 百分之……
“10%”读作:ten percent
17. ‰ : per mill ; per thousand 千分之……
“10‰”读作:ten per thousand
18. ∞: infinity 无限大号
“-∞” 读作:negative infinity
19. ∝: varies as 与...成比例
“X∝Y”读作:X varies as Y
20. √ ̄: square root 平方根
“√ ̄16=4”读作:The square root of sixteen is four.
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