Video Transcript
Adding Hundreds
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.
