Numbers to 999
Hundreds, tens and ones with blocks.
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Where a digit sits tells you what it is worth.
Look: 3 big flats (hundreds), 5 rods (tens) and 2 little cubes (ones) make 352.
✏️ Your turn!
Type your answer and press Check. Kutty will tell you if it is right.
1What is the 7 in 573 worth?
2Write 400 + 20 + 9 as a number.
3What is 1 more than 399?
! Careful!
✗Writing two hundred and five as 2005.
✓Each room holds one digit: 205.
✗Thinking the 4 in 345 means 4.
✓It is in the tens room, so it means 40.
See the whole lesson on one page
Where a digit sits tells you what it is worth.
In 352, the 3 means 300, the 5 means 50 and the 2 means 2. Ten ones make a ten. Ten tens make a hundred.
Think of it like thisThink of three rooms: Hundreds, Tens and Ones. A 3 in the Hundreds room is worth 300. The same 3 in the Ones room is just 3.
- Digit
- One of 0, 1, 2 … 9.
- Place
- Ones, tens or hundreds.
Solved together
What is each digit in 608 worth?
Put the digits in the three rooms.
6 hundreds is 600. 0 tens means no tens. 8 ones is 8.
Add the parts.
600 + 0 + 8 = 608
Answer6 is worth 600, 0 is worth 0, 8 is worth 8.
Now practise it
Kanakku makes new questions on numbers to 999 every time. It shows the working and gives a hint when you are stuck.