number · Year 5 · Suggested learning sequence
Place value to millions
Big numbers are grouped in threes: ones, thousands, millions. Each column is worth ten times the column to its right. A digit's value is the digit times its column: in 4 725 316 the 7 is in the hundred thousands, so it is worth 700 000. The digits after it are replaced by zeros. To add 10 000, change the ten thousands digit; if it is 9, it becomes 0 and the next column goes up by one.
Sample questions
What is the value of the digit 9 in 219 872?
- Find the 9 in the chart: it is in the thousands column.
- Each thousand is worth 1000, so 9 × 1000 = 9000.
- So the answer is 9000.
Answer: 9000
What is the value of the digit 4 in 672 469?
- Find the 4 in the chart: it is in the hundreds column.
- Each hundred is worth 100, so 4 × 100 = 400.
- So the answer is 400.
Answer: 400
What is the value of the digit 6 in 679 330?
- Find the 6 in the chart: it is in the hundred thousands column.
- Each hundred thousand is worth 100 000, so 6 × 100 000 = 600 000.
- So the answer is 600000.
Answer: 600000