K8

Skip counting by 2’s Jenna is in front of a long flight of stairs. She decides to climb them by leaving one stair in between. She leaves out the first step and steps on the second step and leaves out the third step and steps on the fourth one and so on. So the number […]

In geometry, identifying geometric properties of shapes such as lines and angles is an essential skill that you need to acquire to understand more profound concepts such as determining and finding the measures of angles. This time, we will familiarize ourselves with another unique pair of angles called complementary angles. Are you thrilled to learn […]

Geometry is one of the oldest and important branches of mathematics that deals with the properties of shapes such as lines and angles. Supplementary angles, like vertical and complementary angles, are all pairs of angles. However, supplementary and complementary angles do not have to be adjacent to each other, unlike vertical angles. Determining and finding […]

A perfect number is a positive integer that is equal to the sum of its positive divisors, excluding the number itself. Six is the smallest perfect number because it has divisors of 1, 2, and 3, which if we add together, the sum is also 6. The number six (6) is a natural number that […]

A palindromic number is a number that reads the same backwards and forwards. Not only 101 but also its three powers $$101^2=10201$$, $$101^3=1030301$$ and $$101^4=104060401$$ are palindromic numbers! Moreover, 101 is a prime number, as we will study next. We will start recalling some definitions that we have widely discussed in our Prime Numbers article. […]

Imagine a number that can be written as the sum of all digits back and forward. That number is  89 = 9 + 8 + 7 + 6 + 5 + 4 + 3 + 2 + 1 + 2 + 3 + 4 + 5 + 6 + 7 + 8 + 9! Isn’t […]

What do the numbers 900007, 90007, 9007, 907 and 97 have all in common? Firstly, each of themis obtained by deleting a zero from the previous one. Secondly, they are all primes! In the following, we will see why 97 is a prime number. We will start recalling some definitions that we have widely discussed […]

Ninety one is a very fun number! It can be written as the sum of the first thirteen  whole numbers $$91 = 1 + 2 + 3 + 4 + 5 + 6 + 7 + 8 + 9 + 10 + 11 + 12 + 13$$; and also as the sum of the first […]