Jul21
In this post we are going to learn about the criteria of divisibility by 3, 4, 9 and 11. Criteria of divisibility by 3 A number is divisible by 3 when the sum of its digits is a multiple of 3. For example: Is 1098 divisible by 3? We add all the digits of 1098: 1 […]
Continue reading »Jul20
In this post, we are going to learn how to solve division with decimal numbers. We will see various examples. Finally we are going to see how to complete division problems until the remainder equals zero. Dividing a decimal number by a whole number You divide as though they were whole numbers. Simply put the […]
Continue reading »Jul18
American high school mathletes have done it again! This is the second year in a row that the USA Team claimed the championship title at the International Mathematical Olympiad. The most prestigious problem-solving competition in the world, the 57th IMO was held July 6-16, 2016 in Hong Kong. Last summer was the first time since […]
Continue reading »Jul15
With this post, we are going to understand the notion of a fraction as a part of a whole, as a division of natural numbers and its position on the number line. What is a fraction? A fraction represents the number of parts that we have of a whole that is divided into equal parts. Fractions […]
Continue reading »Jul14
Have you tried to do our combined operations problems? When we do a problem, there are times when there is no need to do any operation and other times when you have to do one or many. Today we are going to see these problems where various operations are necessary in order to arrive at a […]
Continue reading »Jul13
Today we are going to learn what direct proportions are and what they are used for. Before we go on, we need to know what a magnitude is. A magnitude is an amount that can be measured or counted. For example, the weight of a person, the number of construction workers working, the number of bananas, the […]
Continue reading »Jul11
Straight lines are key to recognizing shapes that we often see in the real world: geometric figures. In today’s post, we will classify geometric figures formed from straight lines and think about where we can find them. We’ll start with the simplest: Two Straight LinesCan you make a figure with two straight lines? Well, of […]
Continue reading »Jul08
Today, we’re going to walk through some examples of adding fractions. Before you read this post, you might want to check out a previous post where we explain how to add fractions step by step. Let’s begin with the simplest of examples: Adding Fractions with the Same Denominator For example: The only thing we need […]
Continue reading »Jul07
In today’s post, we are going to review Units, Tens, Hundreds, and see some examples of how they are used. Units It is the smallest natural number. We are going to represent a unit with a cube: To abbreviate the word unit, we will write U, for example: Tens Let’s look at a larger number […]
Continue reading »Jul06
In this post, we are going to learn how to do addition problems with and without regrouping. How to Add without Regrouping Place the addends one on top of the other so that the place values fall in the same columns. Add each column together separately, starting with the 1s place. The sums go below each column, […]
Continue reading »Jul04
In this post we will learn to subtract with and without borrowing. Subtract Without Borrowing: The steps we need to follow are: Place the number being subtracted under the number being subtracted from so that place values in the same column match. Subtract each column separately starting with the ones Write the result of the subtraction […]
Continue reading »Jul01
In this post we are going to see some addition and subtraction calculations with decimals. In order to add or subtract decimals, we need to stack the numbers that have a decimal point one on top of the other, making sure to line up the values in the same columns. By doing so, the tens, […]
Continue reading »
