90
Problems: how many more?
Textbook Part 3, pp. 34–35
GoalFind how much bigger or smaller one number is than another by subtracting.
New words
how many more? · qanchaga ko‘p?how many fewer? · qanchaga kam?difference · farq
Explanation
To find how much bigger one number is than another, subtract the smaller from the larger. “How many more?” and “how many fewer?” are answered the same way: larger − smaller.
Worked examples
1A drew 8 pictures and 1B drew 6. Total: 8 + 6 = 14. Difference: 8 − 6 = 2 — 1A drew 2 more.
Lola cut 7 ribbons and Komila 9: 9 − 7 = 2 — Komila cut 2 more.
Class activity
Two children hold buttons. They pair them up — the unpaired ones show the difference. Then they check it with subtraction.
Practice
1
A parade had 7 tanks and 10 army trucks. How many more trucks?
3
2
How much bigger is 45 than 23?
22
3
How much smaller is 30 than 70?
40
4
Table: Aziz got 15 stars and Lola 19. Who got more, and by how many?
Lola, 4 more