Use our printable worksheets and math lessons to provide an interesting way to teach and reinforce basic math skills while teaching money concepts. Practice money math problems and exercises including addition, subtraction, multiplication, division, percents and percentages, fractions, decimals, estimation, and rounding. Rule 5: To multiply decimals:1) Multiply as you would whole numbers. 2) Count the number of decimal places in each factor. 3) Mark off the same number of decimal places in the answer as the sumof the number of decimal places in the factors. Rule 6: Rule to divide decimals1) Move the decimal behind the last digit in the divisor This site contains more than 4,800 math problems for students pre-kindergarten to high school who need help learning to count, write numbers, understand place value, addition, subtraction, multiplication, division, prime numbers, composite numbers, least common multiples, greatest common factors, factoring whole numbers, fractions and lots more.