Place Value: Tens and Ones
Numbers have special places.
Each place has a value.
Tens
Ones
The tens place is on the left.
The ones place is on the right.
4
4 tens = 40
2
2 ones = 2
So 42 means:
4 tens and 2 ones
40 + 2 = 42
Think of tens as bundles!
10 sticks make one bundle.
Loose sticks are ones.
One Thread: A ten is a bundle
Touch. Put a bundle of 10 sticks held by a rubber band on the desk, and 3 loose sticks next to it. How many in all? You can count them, or just say "a bundle and three".
Draw. Draw one long stick with a tie around it — that is the bundle — and three short lines next to it.
Write. 10 + 3 = 13. The 1 in 13 sits in the tens place and stands for that bundle. The 3 stands for the three loose sticks.
Task for the student: "Draw what you did with your hands — so that someone else can understand it. Then write it in numbers."