# I want to learn about: Operations & Algebraic Thinking

• In this post we are going to learn how to factor into prime numbers. First, let’s look at what factoring is: writing a number as the multiplication of other numbers. For example, let’s factor the number 12. 12 = 3 x 4 12 = 2 x 6 12 = 1 x 12 All 3 cases are […]

• In this post, we are going to learn how to multiply fractions (two or more). To do this, we only have to follow these steps: Simplify fractions: Any numerator can be simplified with any denominator. Multiply fractions in a line: Multiply the denominators to obtain the final denominator and multiply the numerators to obtain the […]

• 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 […]

• Do you know how to divide decimals? In this post you will learn how, and at the end, you will find exercises to practice division of decimals. But first you can review what decimal numbers are on this previous post from our blog: Learn What Decimal Numbers Are. How to divide a whole number by […]

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