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Teens! Get to Know the Basic Math Symbols

 

Symbol Symbol Name Meaning / definition Example
= equals sign equality 5 = 2+3
5 is equal to 2+3
not equal sign inequality 5 ≠ 4
5 is not equal to 4
approximately equal approximation sin(0.01) ≈ 0.01,
x ≈ y means x is approximately equal to y
> strict inequality greater than 5 > 4
5 is greater than 4
< strict inequality less than 4 < 5
4 is less than 5
inequality greater than or equal to 5 ≥ 4,
x ≥ y means x is greater than or equal to y
inequality less than or equal to 4 ≤ 5,
x ≤ y means x is greater than or equal to y
( ) parentheses calculate expression inside first 2 × (3+5) = 16
[fusion_builder_container hundred_percent=”yes” overflow=”visible”][fusion_builder_row][fusion_builder_column type=”1_1″ background_position=”left top” background_color=”” border_size=”” border_color=”” border_style=”solid” spacing=”yes” background_image=”” background_repeat=”no-repeat” padding=”” margin_top=”0px” margin_bottom=”0px” class=”” id=”” animation_type=”” animation_speed=”0.3″ animation_direction=”left” hide_on_mobile=”no” center_content=”no” min_height=”none”][ ] brackets calculate expression inside first [(1+2)×(1+5)] = 18
+ plus sign addition 1 + 1 = 2
minus sign subtraction 2 − 1 = 1
± plus – minus both plus and minus operations 3 ± 5 = 8 and -2
± minus – plus both minus and plus operations 3 ± 5 = -2 and 8
* asterisk multiplication 2 * 3 = 6
× times sign multiplication 2 × 3 = 6
· multiplication dot multiplication 2 · 3 = 6
÷ division sign / obelus division 6 ÷ 2 = 3
/ division slash division 6 / 2 = 3
horizontal line division / fraction
mod modulo remainder calculation 7 mod 2 = 1
. period decimal point, decimal separator 2.56 = 2+56/100
ab power exponent 23 = 8
a^b caret exponent 2 ^ 3 = 8
a square root a · a  = a √9 = ±3
3a cube root 3a · 3√a  · 3√a  = a 3√8 = 2
4a fourth root 4a · 4√a  · 4√a  · 4√a  = a 4√16 = ±2
na n-th root (radical) for n=3, n√8 = 2
% percent 1% = 1/100 10% × 30 = 3
per-mille 1‰ = 1/1000 = 0.1% 10‰ × 30 = 0.3
ppm per-million 1ppm = 1/1000000 10ppm × 30 = 0.0003
ppb per-billion 1ppb = 1/1000000000 10ppb × 30 = 3×10-7
ppt per-trillion 1ppt = 10-12 10ppt × 30 = 3×10-10

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