What Are Decimals Lesson Plan?

What is a decimal lesson?

Definition: A decimal is any number in our base-ten number system. Specifically, we will be using numbers that have one or more digits to the right of the decimal point in this unit of lessons. The decimal point is used to separate the ones place from the tenths place in decimals.

How do you introduce decimals to students?

Start by explaining whole number place values, like tens and hundreds. Describe decimals as “in-between” numbers with their own set of place values, including tenths and hundredths. Mention that decimals are related to fractions, and show your students how to convert one to the other.

What are 2 decimal places?

“Two decimal places” is the same as “the nearest hundredth”. “Three decimal places” is the same as “the nearest thousandth.” So, for example, if you are asked to round 3.264 to two decimal places it means the same as if your are asked to round 3.264 to the nearest hundredth.

How do you explain decimal places?

Decimals are a shorthand way to write fractions and mixed numbers with denominators that are powers of 10, like 10,100,1000,10000, etc. If a number has a decimal point, then the first digit to the right of the decimal point indicates the number of tenths. For example, the decimal 0.3 is the same as the fraction 310.

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What are the four rules of decimals?

You should become efficient in using the four basic operations involving decimals— addition, subtraction, multiplication, and division.

What is a decimal simple definition?

(Entry 1 of 2): numbered or proceeding by tens: a: based on the number 10 especially: expressed in or utilizing a decimal system especially with a decimal point. b: subdivided into 10th or 100th units decimal coinage.

How do you add and subtract decimals?

Adding and Subtracting Decimals

  1. Write down the numbers, one under the other, with the decimal points lined up.
  2. Put in zeros so the numbers have the same length (see below for why that is OK)
  3. Then add, using column addition, remembering to put the decimal point in the answer.

How do you compare decimals?

The rules for comparing decimal numbers is as follows:

  1. Compare the whole number part first (i.e., compare the digits in front of the decimal). If they are different, then compare the numbers as you would for any whole number.
  2. Compare the tenths place.
  3. Compare the hundredths place.
  4. Etc.

What is a decimal number called?

The decimal numeral system (also called the base-ten positional numeral system, and occasionally called denary /ˈdiːnəri/ or decanary) is the standard system for denoting integer and non-integer numbers.

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