TEACHER EDITION
Numbers to 100,000
Grade 4 · Lesson 1 · Dimensions 4A p.5
Math Book 4 · sheet 1
Warm-up — yesterday: Grade 3 — comparing four-digit numbers
Which is greater, 6,204 or 6,240?6,240
What we are learning
The places continue: ten thousands sit to the left of thousands, and the comma marks the thousands off in threes.
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
Ten thousands, written out.
10,000
2
Four of them.
10,000
40,000
3
Add 7 thousands.
10,000
40,000
47,000
4
Add 2 hundreds, 6 tens.
10,000
40,000
47,000
47,260
5
And 3 ones. Read it: forty-seven thousand, two hundred sixty-three.
10,000
40,000
47,000
47,260
47,263
Practice
I DOteacher builds it, nothing erasedWrite the value of the 5 in 58,164.
- The 5 is in the ten thousands place.
- Five ten-thousands.
- 50,000
WE DO 1together, on whiteboardsWrite the value of the 3 in 93,072.
Name the place before you write the value. Boards up.
- Thousands place.
- 3,000
WE DO 2together, on whiteboardsWrite the value of the 4 in 40,619.
Count the places from the right, with a finger.
- Ten thousands place.
- 40,000
YOU DOindependent, from the bookBook 4A p.5 — the Do section, clipped onto the slide

Ask yourself: “How many places from the right is this digit?”
Watch for
Children read 93,072 as 'ninety-three thousand seventy-two' and lose the empty hundreds. Require the whole number read aloud before the answer is written.