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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 […]

Young learners often find it tricky to learn the months of the year. But once they get the hang of it, children get very excited to chant what month of the year it is. However, they find it very hard to get there. While the names themselves are hard to remember for little kids, what […]

Angles are formed by two lines or rays that meet at a common endpoint. When two angles are paired together, they are given unique names depending on how they are positioned together or how they are related to each other. One of which is the pair of vertically opposite angles. Are you now getting excited […]

We are going to be talking about triangles. Triangles are a two dimensional shape with three sides and three angles. These sides may be different lengths and the angles may be different measures. If you and a friend were to each draw a triangle, they may not be the same! There would be some features […]