composite numbers – Mr. J’s Math Class

Prime, composite, and arrays

Today we continued learning about prime and composite numbers and how they can be represented visually in arrays. We noticed the interesting phenomenon that prime numbers can be represented by two arrays (think a table with rows and columns) where each array has only one column or one row! Composite numbers have more array configurations.

Prime and composite numbers

Today we start Unit 5, focusing on the unique (and sometimes mysterious-:) numbers known as prime and composite numbers. We learned that prime numbers have only two factors: the number itself and one. Another way of describing a prime number is that it can be divide equally only by itself and one. A composite numberContinue reading “Prime and composite numbers”