18
The number and digit 5
Textbook Part 1, pp. 38–39
GoalKnow the bonds of 5; add and subtract within 5.
New words
five · beshfingers of a hand · qo‘l barmoqlaridomino · domino
Explanation
The number five is written with the digit 5. One hand has 5 fingers. The bonds of 5 are: 4 + 1, 3 + 2, 2 + 3, 1 + 4. Learning these pairs by heart helps you calculate quickly later.
Worked examples
🖐️: fold 3 fingers, 2 stay up — 5 = 3 + 2.
The Quick team scored 5 goals, the Fast team 3. The Quick team scored 2 more: 5 − 3 = 2.
Class activity
A domino has some dots on top. Children draw dots on the bottom half so there are 5 in total.
Practice
1
3 + 2 = ?
5
2
5 − 1 = ?
4
3
1 + _ = 5
4
4
2 + 1 + 2 = ?
5