UnicMinds

# Maths for Kids

## Why Teach Number Theory To Kids?

Let’s start the post with the “3n+1” problem. Introducing the “3n+1” Problem Do the above steps for any number that you randomly choose repeatedly and you will end up at ‘1’. For example: take 12 as a chosen number For example: take 13 as a number Why study Number Theory? Long before we had computers, […]

## Why is the area of a circle pi*r^2?

It is one of the most commonly used formulae in mathematics. We all know that the are of a circle is pi*r^2.But, why is it pi*r^2? Imagine a circle with multiple spokes with each spoke length being ‘r’, and the distance between the spokes is ‘x’. It becomes a tiny triangle with ‘r’ as the

## Why are circular objects the easiest to move? Why are the wheels round?

Look around, and you will see tons of circular objects. The simple reason is they are symmetric, proportionate, and the most easy to handle. Circular objects can be moved from one place to another just by rolling. But, why is it that a circle is round and why are circular or round objects easy to

## The Graph Paper

Graph papers are an ever present thing when you’re learning mathematics as a young student. Also called as Grid Paper or Squared Paper, a Graph Paper is a writing paper printed with fine lines, vertical and horizontal, making up a grid of numerous squares. Graph papers are available as books or even as loose sheets

## Kangaroo Math – Grade 3 – Practice Questions

The Kangaroo Mathematics Exam is an international competition held in 92 countries for Grade 1 to Grade 12. The competition is hosted by different countries each year and checks the student’s application of knowledge in mathematics across levels.  Below are some sample questions for Grade 3.  Question 1: Fred wants to cut two identical shapes

## Ratios & Proportions Worksheet

Ratio and Proportion are used for comparison in mathematics. Ratio is a comparison of two quantities while Proportion is a comparison of two ratios. A ratio is a comparison of two quantities that have the same units. You can express a ratio in any one of the following ways   –   20/3

## Percentages Worksheet

Percentages are a very commonly used math in the real world. These worksheets to practice calculating the percentage of whole numbers and decimals, finding the percentage increase or decrease, and more.Calculating the percentage value of a number involves a little bit of multiplication. One should be familiar with decimal multiplication and decimal place value before

## Trigonometry Practice Worksheet

The word trigonometry comes from “trigonon” meaning triangle and “metry” meaning measurement. It is an area of math that studies the relationships between sides of triangles.. Ancient Egyptians have known theorems around similar triangles for ages and it is said that construction of pyramids use a form of trigonometry. Trigonometry was historically used in astronomy

## Order of Operations Worksheet

Order of Operations refers to the rules that determine the sequence of calculations in an expression with more than one type of operation. The correct order of operations is first to do all operations inside parentheses, then exponents. From there, do all multiplication and division, working from left to right. Then, do all addition and

## Decimals Practice Worksheet

We use decimals in the real-world a lot. This decimal worksheet involves the mathematical operations addition, subtraction, multiplication, division, rounding, and more using decimal numbers. Students can practice various questions and understand themselves and strengthen their foundation in this area of mathematics. Question 1: Plot the decimal value 9.8 in the below number line. Question

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