Real-World Math and Money: A Parent's Guide to Budgeting, Investing Basics, and Everyday Numeracy (Ages 15-18) (Paperback) (ISBN-13: 9798197435729)

Your teenager is about to make the first decade of real money decisions of their life. Most of the math under those decisions is math your teen was already taught, then forgot.

You can run a household budget. You pay the bills on time. You know what a paycheck looks like after taxes. But the last time you sat down with the formal math behind compound interest, expected value, or the difference between a 24 percent APR and a 24 percent APY, you were probably in high school. Your teenager is in that high school right now, and the school is teaching personal finance in a single semester, if at all.

This is a parent's coaching manual, not a book to hand to the teen. Each of twenty-six short chapters refreshes a piece of school math in about fifteen minutes, then gives you the exact words to walk your fifteen-to-eighteen-year-old through the real-world decision that math controls: the first paycheck, the first credit card, the first savings account, the first student loan, the first investment, the first car.

Inside this book:

• Refresh in plain prose: percentages, ratios, compound interest, exponents, expected value, real vs nominal return, basic statistics, all the school math behind everyday money.
• Three dialogue scripts per chapter for the conversations parents avoid: 24% APR, BNPL, custodial Roth IRA, FAFSA, "I want to put it all in crypto."
• Worked numerical Try-It problems with the calculations done out loud, so the math becomes a habit the teen carries into the next forty years.
• One operational this-week move per chapter, using the family's existing bank app, credit card statement, brokerage account, or paycheck as the lab.

Written for parents of teenagers aged 15 to 18 who manage money competently in practice but cannot easily explain why a credit card balance doubles, how an index fund actually works, or what compound growth looks like over forty years. No jargon. No lectures. No "you should have already." Just twenty-six conversations you can have, this month, with the math loaded.

Twenty-six kitchen-table conversations. One math reflex for the next forty years of their financial life.

Author: Emily Hartwell
ISBN-13: 9798197435729
Publisher: Independently Published
Language: English
Published: 05/18/2026
Pages: 202
Format: Paperback
Weight: 0.53lbs
Size: 8.50h x 5.50w x 0.43d