Math Forum - Problems Library - Pre-Algebra, Number Theory: Prime Numbers

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 TOPICS This page: number theory divisibility rules factors prime numbers sequences and series Prime Numbers These problems provide practice with prime factorization in problem solving and mathematical reasoning. Related Resources Interactive resources from our Math Tools project: Math 7: Number Theory The closest match in our Ask Dr. Math archives: FAQ: Prime Numbers NCTM Standards: Number and Operations Standard for Grades 6-8 Access to these problems requires a Membership. Coding Conundrums - Mary DeYoung & class Pre-Algebra, difficulty level 2. Explore encoding and decoding in this cipher puzzle. ... more>> Counting Chicken Wings - Annie Fetter, Suzanne Alejandre Pre-Algebra, difficulty level 3. Figure out how many wings are in the Biggest Bucket O' Wings. ... more>> Divisible by a Dozen - Terry Trotter & Annie Fetter Pre-Algebra, difficulty level 3. If you take any three consecutive integers, multiply the first times the square of the second, then multiply by the third, is 12 a factor of the product? ... more>> An Interesting Integer - Judy Ann Brown Pre-Algebra, difficulty level 2. I'm thinking of a particular integer. It is a multiple of three, five, and seven. No digit occurs more than once. Can you find my number? ... more>> Open and Shut Case - Judy Ann Brown Pre-Algebra, difficulty level 2. Find the locker combination using mathematical clues. ... more>> Palindrome Day - Judy Ann Brown Pre-Algebra, difficulty level 2. How many Palindrome Days are there in a year? ... more>> Prime Probability - Lisa Lavelle Pre-Algebra, difficulty level 3. Given the expression n^2 - 5, what is the probability that the result is prime for integers between 2 and 12? ... more>> Treasure Hunt Math - Judy Ann Brown Pre-Algebra, difficulty level 3. Use clues to find the mystery palindrome. ... more>> Page:  1