Place value in 2-digit numbers

What you'll learn

1. 1

   In a 2-digit number the left digit shows how many tens, and the right digit shows how many ones.

2. 2

   47 is 4 bundles of ten straws and 7 loose straws. 4 tens is 40, plus 7 ones, is 47.

3. 3

   In the number 62, what is the 6 worth?

4. 4

   To compare two numbers, look at the tens first. Only if the tens are the same do the ones decide.

5. 5

   Which is bigger, 39 or 41? The 9 is tempting, but 39 has 3 tens and 41 has 4 tens. So 41 is bigger.

6. 6

   Which number is the biggest?

7. 7

   Ali says 29 is bigger than 31 because 9 is bigger than 1. What did Ali forget?