Lesson Video: Adding Hundreds | Nagwa Lesson Video: Adding Hundreds | Nagwa

# Lesson Video: Adding Hundreds Mathematics

In this video, we will learn how to add multiples of one hundred and model this with place value equipment.

07:32

### Video Transcript

In this video, we will learn how to add multiples of 100 and model this with place value equipment.

When we’re adding multiples of 100, we need to be able to count in hundreds. Let’s practice. 100, 200, 300, 400, 500, 600, 700, 800, 900, 1000. When we reach 10 hundreds or 1000, we exchange our 10 hundreds for 1000. We can also count in hundreds using hundreds blocks. 100, 200, 300, 400, 500, 600, 700, 800, 900, 1000.

When we add together multiples of 100, we need to count the total number of hundreds. So 200 plus 300 gives us one, two, three, four, five hundreds. Two hundreds plus three hundreds equals five hundreds. 200 plus 300 equals 500. Let’s try some practice questions.

Complete the following equation that matches the given model. Four hundreds plus five hundreds equals what hundreds.

We have to use the model to help us add together four hundreds and five hundreds. We know that four plus five is nine. So four hundreds plus five hundreds equals nine hundreds. The missing number is nine. Four hundreds plus five hundreds equals nine hundreds.

Complete the following: Three hundreds plus one hundred equals what hundreds. 300 plus 100 equals what.

In this question, we have to add together three hundreds and one hundred. How many hundreds do we have altogether? There are four hundreds. Three hundreds plus one hundred equals four hundreds. 300 plus 100 equals 400. The missing numbers are four and 400. Three hundreds plus one hundred equals four hundreds. 300 plus 100 equals 400.

Write an equation that matches the given model. Is it 20 plus 40 equals 60, two plus four equals six, 200 plus 400 equals 600, or 200 plus 400 equals 700?

We’re being asked to choose the equation that matches the model. We have to add together two hundreds and four hundreds. We know that two and four makes six. So two hundreds and four hundreds makes six hundreds. So this must be the equation that matches the given model. 200 plus 400 equals 600. The equation that matches the given model is 200 plus 400 equals 600.

Find the missing number.

We’re given a part–whole model. We’re not given the whole amount, but we know the two parts, 300 and 400. We need to add these two parts together to find the whole amount.

Here are three hundreds. Let’s add four more. 100, 200, 300, 400. How many hundreds are there altogether? One, two, three, four, five, six, seven. There are seven hundreds, no tens, and no ones. 300 and 400 gives us a total of 700. The missing number is 700.

A farmer plants 200 orange trees and 300 mango trees. How many trees did the farmer plant?

In this question, we need to add together the 200 orange trees and 300 mango trees to find the total number of trees the farmer planted. We need to add together 200 and 300. We can use two hundreds blocks to model the number 200 and three hundreds to model the number 300. How many hundreds do we have altogether? One, two, three, four, five. Two hundreds plus three hundreds gives us five hundreds. 200 plus 300 equals 500. If a farmer plants 200 orange trees and 300 mango trees, the farmer will have 500 trees altogether. 200 plus 300 equals 500.

What have we learned in this video? We’ve learned how to add multiples of 100 using place value equipment.

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