Each digit has its place
You learn what a digit is worth by looking at its place, and how to build a number from its parts.
How to work it out
- Name the places from the right: ones, tens, hundreds.
- Find the place the digit is in.
- Multiply the digit by the value of that place.
- To build a number, add the parts.
Th1,000
—
H100
5
T10
3
O1
4
500 + 30 + 4=534
What is the value of the 3 in 534?
- Name the places from the right: 4 ones, 3 tens, 5 hundreds.
- The 3 is in the tens place.
- Do 3 × 10 = 30.
Th1,000
—
H100
0
T10
0
O1
3
More examples
What is the value of the 7 in 761?
- Name the places from the right: ones, tens, hundreds.
- The 7 is in the hundreds place.
- Do 7 × 100 = 700.
Th1,000
—
H100
0
T10
0
O1
7
3 H + 4 T + 2 O
- H, T and O stand for hundreds, tens and ones.
- Work out each part: 3 × 100 = 300, 4 × 10 = 40 and 2 × 1 = 2.
- Add them: 300 + 40 + 2 = 342.
Th1,000
—
H100
0
T10
0
O1
3
5 H + 7 O
- Work out each part: 5 × 100 = 500 and 7 × 1 = 7.
- There are no tens, so write a 0 there.
- Add them: 500 + 7 = 507.
Th1,000
—
H100
0
T10
0
O1
5