This is a new and interesting challenge for kids who already know how to count money and are adept at adding and subtracting. Budgeting teaches kids math skills that they can apply to everyday life. Give kids a made-up set of circumstances that will affect their budget including how much they currently have in their savings account, the amount of their weekly paycheck, what their living expenses are (housing, food, utilities, entertainment, clothing, etc.). Give the kids a budget sheet and allow them to fill in all the blanks to add up their income, fixed expenses, weekly savings and spending money. You can allow them to determine the variable expenditures like clothing, savings and entertainment spending and see if they can make a budget that allows them to both save and spend money.
See if your child can calculate how far each car will go on a tank of gas. Give them examples of three different cars, each with different city and highway miles per gallon (mpg), and with different sized gas tanks. Have your child figure out how far each car can go on one tank of gas both driving on the highway and through the city. You can also give them a price for a gallon of gas and have them figure out which car costs the least to operate and which car costs the most.
Explain to your child that scientists have a way to see if you are at a healthy weight for your height. Have them weigh themselves and record the data in pounds. Then take their height measurement with a tape measure and record the data in feet and inches. Give them the equation to calculate their body mass index (BMI): ((weight times 705) divided by height) divided by height. Weight must be in pounds, and height must be in inches. If your child is 4 feet 5 inches, have them first convert their height to total inches (53 in this case) and then plug it into the equation. According to FigureThis.org, a healthy BMI is no higher than 27 and no lower than 19.