How to Improve at Simple Arithmetic

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When it comes to improving at simple arithmetic, repetition is often key. Improve at simple arithmetic with help from an experienced educator in this free video clip.

Part of the Video Series: Lessons in Math
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Video Transcript

Hi, my name is Marija, I'm a mathematician, and today I'm going to show you how to improve at simple arithmetic. So, if you're starting off with the basics like adding and subtracting, repetition is key. So, I would say, to definitely get some flash cards and start practicing those simple, basic but necessary facts. Once you've got the addition and subtraction of single digits down, you would move onto adding multiple digits. So, let's say, we have for example, a problem like, seven plus three plus eight plus two. Now, instead of going and adding in order. Start it to recognize that addition is commutative. And the easiest thing to do, would be to look for pairs of ten. So, I would say, that's ten, that's 20, and that's 26, and my sum is 26. So, always try to look for thing sin pairs of ten, it just makes it a lot easier to add. Once you move onto multiplying and again, once you start with the basics, you have to go back to the flash cards, go back to the repetition of your multiplication tables. Once you understand how to do the single digits, a nice way to do the double digits. For example, if you have 13 times seven. What I would do is recognize, if this is the same as ten times seven, plus three times seven. Right, because 13 is the same thing as ten and three. So, I'm multiplying them each by seven, which is a lot easier. Because ten times seven, I know, is 70 and three times seven is 21. And now, I can add 70 plus 21 to get 91as their product. My name is Marija, and I just showed some ways to improve at simple arithmetic.


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