Video narration
In Number Town, Number 20 walks sadly from house to house, looking for a friend. At the Tens House, 20 finds its place. Why? The 2 means 2 tens. Now Number 4 arrives. Where should 4 go? [Pause] Yes-the Ones House! It means 4 ones. Put them together: 2 tens and 4 ones make 24. Two digits, one number. Now try 35. Which house does each digit choose? [Pause] The 3 goes to the Tens House: 3 tens. The 5 goes to the Ones House: 5 ones. Here is the magic rule: a digit's house tells what it means. In the first place, it counts tens. In the second place, it counts single ones. And watch this! Ten ones join together and become 1 ten: 10 ones = 1 ten. Your turn: 42. That is 4 tens and 2 ones. Remember: every two-digit number has a Tens House and an Ones House.