☰ Contents · Mathematics

Round numbers, the distributive property, time, rectangles and multi-digit numbers

Lessons 6–10 · 5 lessons · I.V. Repyova. Mathematics Grade 3, Parts 1–4. Novda Edutainment, 2023
10

Multi-digit numbers

Textbook: Part 1, lesson 10, pp. 31–33
GoalLearn the places and classes of multi-digit numbers and write such numbers.
New words
place · xonaclass (group of three places) · sinfones class · birliklar sinfithousands class · minglar sinfi
Explanation

Each digit of a number occupies a place. Places go right to left: ones, tens, hundreds and so on. For convenience they are grouped in threes from the right into classes: the first is the ones class, the next the thousands class. A space is left between classes.

Worked examples
347 296 has 6 digits. Thousands class: 347, ones class: 296. Read: three hundred forty-seven thousand two hundred ninety-six.
The number made of 48 thousands and 315 ones is 48 315.
Class activity

“Class chart”: a two-class chart is drawn on the board. The teacher says a number and children take turns writing the digits in the correct places.

Practice
1
How many digits does 413 207 have? Which digits form its thousands class?
2
Write the number that has 290 thousands and 508 ones.
3
Write the number that has 70 thousands and 400 ones.
4
Read the number 413 207 in words.
5
Write the number that has 9 thousands and 104 ones.