2x(-4)=-8
你能用英语把这个等式(equation)读出来吗?
被难倒了吧!
别着急!看完下面双语君给你整理的各种数学符号和标点符号的英文表达,你马上就会说了!
数学符号
Mathematical symbols
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
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.
21
3√ ̄: cube root 立方根
“3√ ̄27=3”读作:The cube root of 27 is 3.
22
∵: since; because 因为
“∵1+1=2”读作:because one plus one equals two
23
∴: hence; therefore 所以
“∴1
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