Content about addition and subtraction in elementary mathematics. Exercises, tutorials, and problems with addition and subtraction in elementary mathematics. Here you will find posts about adding and subtracting to make learning mathematics easier and more fun.
May11
Each and every one of us has our own style of learning, and not all strategies work for everyone. In today’s entry we’re going to show you different addition algorithm, ways to solve a vertical addition with carrying, so you can choose the simplest algorithm for you. Addition algorithm with blocks It’s the classic addition […]
Continue reading »Apr12
In this post, we are going to learn how to estimate sums as the result of an addition or subtraction. Mastering this skill is important to be able to verify if the obtained result is reasonable and the right order of magnitude. Estimate Sums of Amounts to The Tens: Round the numbers we are going […]
Continue reading »Mar31
Did you know that the commutative property can help us solve an operation faster? Today we will look at the commutative property of addition and multiplication. The commutative property tells us that the result of an addition or multiplication is always the same, regardless of the order of the elements with which it operates. Let’s […]
Continue reading »Mar30
What are polynomials? Before we start adding them, we need to know what they are and what properties they have. It’s important to understand what factors and degrees are, and how to order the terms. If you’re not sure about these concepts, you can read these previous posts about the properties of monomials and properties […]
Continue reading »Mar29
In this post, we are going to learn an addition mental calculation strategy in order to be able to add two numbers, breaking them up into hundreds, tens, ones, etc. We can do this by breaking up just one number or breaking up both of them. Breaking up one number for addition It’s very simple, […]
Continue reading »Mar17
In today’s blog post, we are going to look at integers: what they are and how to add and subtract them. Let’s start by understanding what integers really are: Integers are numbers that aren’t a fraction or a decimal. These numbers include natural numbers (1, 2, 3…), negative numbers (-1, -2, -3…) and zero (0). […]
Continue reading »Feb08
Today, we present our five addition tricks.They are super helpful and will help you add faster, getting the answer right every time. Count from the number Start with one of the numbers and keep counting onwards. For example: 7 + 2 Start on 7 Count 2 more…until you hit 9 So, 7 + 2 = 9 […]
Continue reading »Feb03
Today, we will be learning to use “borrowing,” (sometimes called “regrouping”) in a subtraction problem. In order to do this we need to remember how the elements of a subtraction problem are placed: Place the number being subtracted under the number being subtracted from so that place values in the same column match. Subtract each […]
Continue reading »Jan16
In this post, we’re going to explain what adding with an unknown quantity is and why it’s taught during the first years of Elementary school. Some people think it’s strange that children are taught such an important variable, like an unknown quantity, in addition problems shortly after the children have just started to get used […]
Continue reading »Jan13
In this post, we are going to learn mental calculation strategies, which we can use when one of the two numbers is near a multiple of ten. We round the number up to that nearest multiple of ten, and then we add or subtract the digits that are left. We’re going to take a look […]
Continue reading »Dec14
In this post, we are going to learn how to add decimal numbers. For example: 52.7 + 4.6 The most important thing about adding decimals is to put the decimal numbers in the correct position. For this, we have to align the decimals and be sure all digits of the same place value are […]
Continue reading »Dec03
In this post, we are going to learn to analyze, think about, and solve problems that require subtraction. At Smartick, we believe that a student understands and knows math the best when they have the ability to solve problems correctly. Therefore, we are going to analyze 5 different problems that require subtraction to reach a […]
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