SaiBook.us Measurement

Lesson Example Discussion Quiz: Class Homework

Example

Title: Identify the numbers

Grade: 2-a Lesson: S1-L7

Explanation: The best way to understand measurement is by looking at some examples. Take turns and read each example for easy understanding.

Examples:

Use the number line to add numbers 158 + 13 = __.

Step 1a

Draw a horizontal line on a piece of paper to represent the number line.
Mark the starting point: Mark the starting point of the number line with the number 158.You can write 158 on the line or draw a small dot or a tick to represent this point.
Move to the right: To add 13 to 158, you need to move 13 units to the right of the starting point.
Each unit on the number line represents one whole number.
So, count 13 units to the right of the starting point and mark this endpoint with a dot or a tick.

Explanation: Here, we are using the number lines for the given numbers.
The greater number will be marked first on a number line.
Then the other number will be moved toward the right in the number line.

Step 1b

Find the sum: The number that you marked at the endpoint is the sum of 158 and 13.
In this case, the endpoint is located at 171, so 158 + 13 = 171.
Write the answer: Write the answer next to the equation, so it looks like this:
158 + 13 = 171.

Explanation: Here, we are adding the given numbers, then, we get 171.

Identify the number that are more then the given number 344
161,451,37,299,54,149.

Step 2a

To identify the numbers that are greater than 344 from the given list of numbers, you simply need to compare each number to 344 and keep only those that are greater.
Here’s how you can do it for the given list:

161: This number is less than 344, so it is not greater than 344.

451: This number is greater than 344, so it is greater than 344.

37: This number is less than 344, so it is not greater than 344.

299: This number is less than 344, so it is not greater than 344.

54: This number is less than 344, so it is not greater than 344.

149: This number is less than 344, so it is not greater than 344.

So, the numbers that are greater than 344 from the given list are 451

Explanation: Here, we are observing the numbers and checking whether the given the number is greater or not.
Then, we get more than the given number is 451.