Video Transcript
The income of a company in its first year was two million pounds and in its second year was 9894293 pounds. Calculate the total income in those two years.
There are two amounts of money in this question. One is the income or the amount that the company’s earned in its first year. This is two million pounds. And the second amount is the company’s income in its second year. And we can see this is a seven-digit number.
We’re asked to calculate the total income in these two years. In other words, we need to add together the amount that the company earned in the first year and also in the second year. In order for us to add these two numbers together, we first need to think about how to write two million pounds using digits. Because surely, we’re going to have to use column addition, these numbers are so large, or do we?
Perhaps there’s a quicker way to find the answer. Instead, let’s begin by thinking about the second number. When the question was read out to you, the number was read correctly. But imagine we just saw this string of seven digits, 9894293. How would we say this number? The digits in a seven-digit number are ones, tens, hundreds, thousands, tens of thousands, hundred thousands, and millions. Remember that one million is a one with six zeros after it, so it’s a seven-digit number. We can use our knowledge of place value to help read the number. We use commas to separate the millions, the thousands, and the ones groups. So as we say the number, we can pause when we get to the end of these groups. 9,894,293.
Let’s say that number again, nine million eight hundred and — but hang on. We only need to add two million pounds. We have nine millions, and all we have to do is to add another two millions. We don’t need to use column addition. We can work out the answer in our heads. Nine plus two equals 11. So, there’s only one digit in our number that’s going to change. Instead of nine millions, we now have eleven millions. All the other digits stay the same.
Adding large numbers isn’t always tricky. It’s often very straightforward. If the income of a company in its first year is two million pounds. And, in its second year is 9,894,293 pounds. To find the total, all we have to do is to add up the number of millions that we have. The answer is 11,894,293 pounds.
