There are several instances where the US spelling differs from the UK version:
sulfur (US) sulphur (UK)
aluminum (US) aluminium (UK)
color, honor, labor, vigor (US) colour etc (UK)
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In the UK it is maths, in the US, math.
Mathematics help us in our daily life by helping us to measure things around us or to help us to solve problems in math.
math
math
"Mathematics" simply sounds more intillectual than just "Math".