Calculating Fractions and Decimals

🛎️ Properties of Arithmetic

• The commutative law means the order does not matter: $a+b=b+a$ and $a\times b=b\times a$.
• The associative law means grouping does not matter: $a+(b+c)=(a+b)+c$ and $a\times(b\times c)=(a\times b)\times c$.