We use math in every aspect of our daily lives.
First, we use math when shopping to add up our purchases to make sure we can afford them. We use math to compare prices as well. For example, if one bag of coffee beans is $15.99 for 16 ounces and another $12.99 for 12 ounces, we need to use arithmetic to calculate which is actually more expensive per ounce.
We also use mathematics to balance our checkbooks and make budgets for ourselves.
We use math in cooking when we measure ingredients, especially if we are making half a recipe.
When we travel internationally, we need to know math to do currency conversions.
Businesses use math to do accounting, budgeting, payroll, and taxes.