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Watch this video and learn how to count in steps of 100 using a number line and a place value chart.

When you count up and down in hundreds, it is just like when you count in tens. Only this time, you are changing the hundreds digit. The tens and ones stay the same.

Look at this number line:

Can you see how only the hundreds column is changing each time?

When you reach 1000, you begin to use the thousands column.

Remember, 1000 is the same as 10 hundreds.

What is three-hundred more than 231?

Three hundred is the same as three lots of 100. Use the number line to help you count up in hundreds.

So three-hundred more than 231 is 531.

Counting up and down in hundreds is the same as adding or subtracting hundreds.

You could also write this question as:

231 + 300 = 531

What is two-hundred less than 854?

Place value charts can also help you to count in hundreds. Here is 854 in a place value chart.

To find two hundred less, you take away two of the hundred counters in the hundreds column to find the answer.

Now you are left with 6 hundreds, 5 tens and 4 ones.

So the answer is 654.

As a subtraction, you would write this question:

854 – 200 = 654

A clown has 133 balloons. He buys 3 more packs of 100 balloons. How many balloons does he have now?

This question is asking you how many more balloons the clown has, so you need to count on and add.

Use the number line method and the place value method to help you answer the question. Will you get the same answer each time?

Number line method

Three hundred more than 133 is 433.

Place value method

You can double-check the answer using the place value method.

Add three more hundreds into the hundreds column:

You now have 4 hundreds, 3 tens and 3 ones. That’s 433 as well!