# All posts by Smartick

• Do you know what direct proportionality is? What are proportional magnitudes? If you do not already know, in the previous post on our blog, we explain what direct proportionality is and what we can use it for. If you already know that, I challenge you to identify which of these three situations is a direct […]

• Why is it useful to know the divisibility of a number?  It allows us to determine whether a number is divisible by another number without having to divide them. In this post we are going to learn the divisibility guidelines for 9. Criteria for the divisibility by 9:   A number is divisible by 9 if […]

• Imagine that you have to solve the following addition problem that combines decimals and fractions: It’s not so easy to add a fraction to a decimal, right? It’s much easier to add fractions to fractions, or decimals to decimals. So, we can do this in two ways: Change the decimal to a fraction Change the […]

•   Do you remember your multiplication tables? Do you remember how to  perform 1 digit divisions? Knowing how to do these things is important for being able to solve problems involving dividing 2 digit numbers. Are you prepared to continue? Before beginning I am going to remind you the different parts of division since they will […]

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