Chemistry HELP!!! Chemistry nothing like mth?

Im usually good at math taking pre-calculus in 9th grade but chemistry turned everything I know about math on its head. 1 doesnt equal 1.0 WTF 1/4 doesn't equal .250 WHY!!!!!!!!!!!!!!! WHAT IN THE WORLD IS A SIGNIFICANT FIGURE!!!!!!!!!! Why do I need a calculator why can't they just use fractions... show more Im usually good at math taking pre-calculus in 9th grade but chemistry turned everything I know about math on its head. 1 doesnt equal 1.0 WTF
1/4 doesn't equal .250 WHY!!!!!!!!!!!!!!! WHAT IN THE WORLD IS A SIGNIFICANT FIGURE!!!!!!!!!! Why do I need a calculator why can't they just use fractions GRRRR!!!!! Help please Im super confused
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