In this topic, we will learn what a decimal is and how to show it visually and on a number line. We will also add, subtract, multiply, and divide with decimals.
In this topic, we will learn what a decimal is and how to show it visually and on a number line. We will also add, subtract, multiply, and divide with decimals.
8 goes into 1 no times, so we create a decimal point and go to the tenth's place. 8 goes into 10 (which is technically 1.0) one time, leaving a 2 (which is 0.2) remaining.
What are decimals? Decimals are a way of writing numbers that include parts of a whole. They are written with a decimal point to separate the whole number from the fractional part. For example, 2.5 is a decimal number that is equivalent to 2 1 2 . Try it yourself with these exercises:
So I encourage you to pause the video and say and think about how would you represent 1/5 as a decimal. Well, there's a bunch of ways that you could think about it.
Let's see if we can write the fraction 11 over 25, or we could call 11/25, to see if we can write that as a decimal. And we're going to round it to the nearest thousandths place.
Place value and decimals are related. We can begin by reviewing the concept of ones, tens, and hundreds places, and then demonstrates how tenths, hundredths, and thousandths places work. By understanding place value, we can interpret the meaning of each digit in a decimal number.
