10
Counting: the number before and after
Textbook Part 1, pp. 22–23
GoalFind a number’s “neighbours” — the number before and the number after.
New words
number before · oldingi sonnumber after · keyingi sonneighbouring numbers · qo‘shni sonlar
Explanation
After every number comes a number that is one bigger, and before it comes a number that is one smaller. For example, the neighbours of 4 are 3 and 5. On the number line the number before is on the left and the number after is on the right.
Worked examples
_, 7, _ → 6, 7, 8
Counting back: 10, 9, 8, 7, 6, 5, 4, 3, 2, 1.
Class activity
“Find the neighbour” game: the teacher says a number, one child says the number before, another says the number after.
Practice
1
Which number comes after 5?
6
2
Which number comes before 9?
8
3
Write the neighbours of 3.
2, 4
4
Count from 1 skipping one each time: 1, 3, ...
1, 3, 5, 7, 9