Understanding place values and how to identify and name them is a first grade, Common Core math skill: 1.NBT.2. Below we show two videos that demonstrate this standard. Then, we provide a breakdown of the specific steps in the videos to help you teach your class.
Your students should be familiar with counting from 1 to 100 using 1’s and 10’s, starting from any number. They should also be able to read, write, and represent objects using numbers between 0 and 20 (K.CC.1-3).
Later on, understanding place values will enable your students to skip-count within 1000 (counting by 5’s, 10’s, and 100’s). They will also be able to read and write numbers by using “base ten numerals, number names, and expanded form” (2.NBT.1-3).
Common Core Standard: 1.NBT.2 - Understand that the two digits of a two-digit number represent amounts of tens and ones
Students who understand this principle can:
2 Videos to Help You Teach Common Core Standard: 1.NBT.2
Below we provide and breakdown two videos to help you teach your students this standard.
Video 1: Using T-Charts to Find Place Values
The video is told from the perspective of a student. His teacher asks the class to give the age of someone in their family. Four students give their relatives ages and are asked to write those ages on the board and use a T-chart to find how many 10’s and how many 1’s are in the ages.
The video helps visualize the 10’s and 1’s place for students, giving them an easy way to identify the numbers in each place value.
Video 2: Counting by Tens and Ones
The video begins by explaining how pace values work. The first example shows a woman shopping for apples. She needs 43 apples for pie, but counting 43 apples out one-by-one is tiring.
Then she sees that the store sells apples in groups of 10. After grabbing 4 groups of 10, she already has 40 apples and only needs to count 3 more.
The bundles of ten help students understand place value. Boddle explains that the position a digit has in a number determines its place value.
In 43, 4 is in the tens place and 3 is in the one’s place. Similarly, in the number 63, 6 is in the tens place, meaning it is equal to 60. Then, 3 is in the ones place and is equal to 3.
The video then provides a couple different examples, helping students visualize and understand place value.
The next example uses dots.
The third example has students convert between tens and ones.
Want more practice?
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*Information on standards is gathered from The New Mexico Public Education Department's New Mexico Instructional Scope for Mathematics and the Common Core website.