Basic math symbols m Symbol Meaning / definition Example Name l 5 = 2+3 = equality 5 is equal to 2+3 5 4 not equal ≠ ≠ inequality sign 5 is not equal to 4 sin(0.01) 0.01, ≈ ≈ approximation equal x y means x is approximately equal to y ≈ > 5 > 4 strict greater than inequality 5 is greater than 4 < 4 < 5 strict less than inequality 4 is less than 5 5 4, ≥ ≥ inequality greater than or equal to x y means x is greater than or equal to y ≥ 4 5, ≤ ≤ inequality less than or equal to means is less than or equal to x ≤ y x y ( calculate expression 2 × (3+5) = 16 ) s inside first [ calculate expression [(1+2)×(1+5)] = 18 brackets ] inside first + addition 1 + 1 = 2 − 2 1 = 1 subtraction − plus - both plus and minus ± 3 ± 5 = 8 and -2 minus operations
Basic math symbols Symbol Name Meaning / definition Example = equality 5 = 2+3 5 is equal to 2+3 ≠ not equal sign inequality 5 ≠ 4 5 is not equal to 4 ≈ 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 less than or equal to y ( ) calculate expression inside first 2 × (3+5) = 16 [ ] brackets calculate expression inside first [(1+2)×(1+5)] = 18 + addition 1 + 1 = 2 − subtraction 2 − 1 = 1 ± plus - minus both plus and minus operations 3 ± 5 = 8 and -2 s l m
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