Write using digits: one hundred forty-eight thousand, six hundred twenty-five.
We’ve been given a number that’s written in words. But the problem asks us to write the number using digits. We can use a place value grid to help us. When we think about a number’s place value, as we move to the left, the value of each digit becomes 10 times as much.
We start off at the ones column, then the tens and the hundreds. When we write larger numbers, we often group the digits in threes. Sometimes we use a small space to separate the groups of three digits, sometimes even a comma. And so we can label our hundreds, tens, and ones as a group of ones. And our next group of three are the thousands. This is why we often read their numbers something hundred something-ty thousand.
To the left of our one hundreds column comes the thousands column, then the ten thousands and hundred thousands columns. So let’s read our number again and this time think about where to write each digit. Firstly, we can think of the group of three digits that are classed as thousands. And we can read the first part of our number, one hundred forty-eight thousand. That’s one hundred thousand, four ten thousands or forty thousands, and eight thousands, 148000.
And now we can think about the group of three digits that we’re going to class as ones, our hundreds tens and ones columns. The number in words reads as six hundred twenty-five. And we know we can write this with six in the hundreds column, two in the tens column, which is the same as 20, and then five ones. Let’s read the whole number again from left to right, one hundred forty-eight thousand six hundred twenty-five. And so as we write the number using digits.
Notice how we use a comma to separate the thousands from the hundreds digits. This helps us to read the number more quickly and more easily. So we write the number one hundred forty-eight thousand, six hundred twenty-five using digits as 148,625.