TEACHER EDITION

Place Value — Part 1

Grade 3 · Lesson 2 · Dimensions 3A p.10
Math Book 3 · sheet 2
Warm-up — yesterday: Numbers to 10,000
Write 3 thousands, 0 hundreds, 7 tens, 2 ones.
3,072

What we are learning

A digit's VALUE is what it is worth where it stands — not the digit itself.

How it is done — keep this beside you

These steps stay on your page while you work. If you get stuck, find the step you are on and read it again before you put your hand up.

1
The number 4,573.
4,573
2
The 4 is in the thousands place. Its value is 4,000.
4,573 4 → 4,000
3
The 5 is in the hundreds place. Its value is 500.
4,573 4 → 4,000 5 → 500
4
The 7 is in the tens place. Its value is 70.
4,573 4 → 4,000 5 → 500 7 → 70
5
The 3 is ones. 4,000 + 500 + 70 + 3.
4,573 4 → 4,000 5 → 500 7 → 70 4,573 = 4,000 + 500 + 70 + 3

Practice

I DOteacher builds it, nothing erased
What is the value of the 6 in 2,614?
  1. The 6 is in the hundreds place.
  2. Six hundreds is 600.
  3. 600
WE DO 1together, on whiteboards
What is the value of the 8 in 8,192?
Name the place first, then the value. Boards up.
  1. Thousands place.
  2. 8,000
WE DO 2together, on whiteboards
What is the value of the 3 in 5,038?
Find the 3 carefully — count the places from the right.
  1. Tens place.
  2. 30
YOU DOindependent, from the book
Book 3A p.10 — the Do section, clipped onto the slide
the book page
Ask yourself: “Which place is it in, and what is one of those worth?”
Watch for
5,038 puts the 3 in the tens with a zero beside it. Children read past the zero and call it hundreds. Have them count places from the right, with a finger, every time.