Question

В библиотеке на одной полке 69 учебников по истории, а на другой 20 учебников по русскому языку и 46 учебниковпо математике. На сколько учебников больше на первой полке, чем на второй?

Answer 1

1) 20+46=66 (учебников на второй полке) 
2) 69-66=3 (учебника) 
Ответ: на 3 учебника

Answer 2

1) 20+46=66 уч
2) 69-66= 3 уч
Ответ : на 3 учебника больше

Answer 3

Calculating the Difference in Textbooks

To find out how many more textbooks are on the first shelf compared to the second shelf, we can subtract the number of textbooks on the second shelf from the number of textbooks on the first shelf.

Number of history textbooks on the first shelf: 69 Number of Russian language textbooks on the second shelf: 20 Number of mathematics textbooks on the second shelf: 46

Calculation

To calculate the difference, we can use the following formula: Difference = Number of history textbooks - (Number of Russian language textbooks + Number of mathematics textbooks)

Difference = 69 - (20 + 46)

Let's calculate the difference.

69 - (20 + 46) = 69 - 66 = 3

So, there are 3 more history textbooks on the first shelf compared to the second shelf.