TEACHER EDITION

Numbers to 1,000,000

Grade 4 · Lesson 2 · Dimensions 4A p.10
Math Book 4 · sheet 2
Warm-up — yesterday: Numbers to 100,000
What is the value of the 6 in 64,820?
60,000

What we are learning

Ten hundred-thousands make one million. The pattern of threes repeats, and the comma is what makes it readable.

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
One hundred thousand.
100,000
2
Ten of them make a million.
100,000 1,000,000
3
Three hundred thousands, and 5 ten thousands.
100,000 1,000,000 350,000
4
Add 2 thousands.
100,000 1,000,000 350,000 352,000
5
Add 4 hundreds, 1 ten, 7 ones.
100,000 1,000,000 350,000 352,000 352,417

Practice

I DOteacher builds it, nothing erased
Write the value of the 7 in 273,905.
  1. Count places from the right: ones, tens, hundreds, thousands, ten thousands.
  2. The 7 is in the ten thousands place.
  3. 70,000
WE DO 1together, on whiteboards
Write the value of the 8 in 819,406.
Count from the RIGHT, not the left. Boards up.
  1. Hundred thousands place.
  2. 800,000
WE DO 2together, on whiteboards
Write the value of the 5 in 105,270.
There is a zero next to it. Count anyway.
  1. Thousands place.
  2. 5,000
YOU DOindependent, from the book
Book 4A p.10 — the Do section, clipped onto the slide
the book page
Ask yourself: “Counting from the right, which place is this?”
Watch for
Counting from the LEFT is the near-universal error and it works by accident whenever the number has the length the child expects. 105,270 breaks it. Insist on right-to-left every time.