# I want to learn about: Addition and Subtraction

Contenido generado sobre sumas y restas de matemáticas de primaria

• 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 for being able to verify if the obtained result is of the right order of magnitude and is reasonable. Estimate Sums of Amounts to The Tens: Round the numbers we […]

• 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 just one number or breaking both of them. Breaking up one number for addition: It’s very simple, so let’s […]

• Welcome, again, to Smartick’s blog. Today we are going to explain the exercises on subtracting fractions. The first thing you need to know before going ahead with the exercises is how to calculate the least common multiple of different numbers. The following link will take you to the post where we explain the steps on […]

• In today’s blog post we are going to look at whole numbers: what they are and how to add and subtract them. Let’s start by understanding what whole numbers really are: Whole numbers are numbers that aren’t a fraction or a decimal. These numbers include natural numbers (1, 2, 3…), negative numbers (-1, -2, -3…) […]

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