Natalie has $4 in her purse. She earns $6 after babysitting her little brother. Natalie
decides to buy a book for $10 with her money.
How much money, in dollars. does Natalie have left in her purse, and why?
$2 because 4-6=2
58 because 4-6 + 10 = 8
SO because 4+6-10=0
$10 because 4+ 6 = 10