The factors of 72 are 1, 2, 3, 4, 6, 8, 9, 12, 18, 24, 36, 72 and its negative factors are -1, -2, -3, -4, -6, -8, -9, -12, -18, -24, -36, -72.
What is the factor rainbow?
A factor rainbow is a beautiful idea that deserves to be part of every child’s Mathematical vocabulary. Here’s the factor rainbow for 6: The factors of 6 are the numbers that divide into 6 exactly: 1, 2, 3 & 6. I can use factor rainbows to work out the factor pairs for different numbers.
Is 73 a perfect number?
“The best number is 73,” Cooper explained in the episode. 73 is the 21st prime number. Its mirror, 37, is the 12th, and its mirror, 21, is the product of multiplying seven and three and in binary, 73 is a palindrome, 1001001, which backwards is 1001001.”
Are there any positive or negative factors of 72?
Here is the list of all Postive Factors of 72 in numerical order: 1, 2, 3, 4, 6, 8, 9, 12, 18, 24, 36, and 72. Factors of 72 include negative numbers. Therefore, all the Positive Factors of 72 can be converted to negative numbers. The list of Negative Factors of 72 are: -1, -2, -3, -4, -6, -8, -9, -12, -18, -24, -36, and -72.
How to draw a rainbow with factors of 12?
Make a rainbow with the factors of 12 (see related media for examples). Write another number, like 15, on the board. Remind students that 1 and the number itself are always factors of every number. Draw a factor rainbow for 15 starting with 1. Draw a big arch from 1 to 15, leaving room for other factors inside the first arch.
How to use Rainbows to list factor pairs?
Tell students that we can use factor rainbows as a way to list factor pairs and find all the factors of a number, in order from least to greatest. Make a rainbow with the factors of 12 (see related media for examples). Write another number, like 15, on the board. Remind students that 1 and the number itself are always factors of every number.
How to calculate the quotient of factors of 72?
Since the Factors of 72 are all the numbers that you can evenly divide into 72, we simply need to divide 72 by all numbers up to 72 to see which ones result in an even quotient. When we did that, we found that these calculations resulted in an even quotient:
