Question

821. Выполните действия: 1) 2,3. 11 + 1,8 · 15; 2) 6,25 . 16 + 18,9 · 21; 3) 9,03 • 25 - 10,7 · 15; 4) 1,5 . 10 + 2,08 45; 5) 12,08 . 100 - 75,6. 11; 6) 46,131 · 10 + 91,05 . ​

Answer 1

Ответ:

1) 25.3+27=52.3

2) 100+396.9=496.9

3) 225,75-160.5=65.25

4) 15+93.6=108.6 (видимо там умножение, но знака нет, так что это не точно)

5) 1208-831.6=376.4

6) 461.31+91.05=552.36

Answer 2

Ответ:

1)52.3

2)496.9

3)65.25

4)не понятно

5)376,4

6)552,26

Answer 3

I can help you with math problems. Here are the detailed solutions for your questions:

1) $$2,3 + 11 + 1,8 \cdot 15$$ To solve this, we first apply the order of operations and multiply 1.8 by 15. Then we add the results with 2.3 and 11. The solution is:

$$2,3 + 11 + 1,8 \cdot 15 = 2,3 + 11 + 27 = 40,3$$

2) $$6,25 + 16 + 18,9 \cdot 21$$ Similarly, we first multiply 18.9 by 21 and then add the results with 6.25 and 16. The solution is:

$$6,25 + 16 + 18,9 \cdot 21 = 6,25 + 16 + 396,9 = 419,15$$

3) $$9,03 \cdot 25 - 10,7 \cdot 15$$ Here, we first multiply 9.03 by 25 and 10.7 by 15. Then we subtract the second result from the first one. The solution is:

$$9,03 \cdot 25 - 10,7 \cdot 15 = 225,75 - 160,5 = 65,25$$

4) $$1,5 + 10 + 2,08 \cdot 45$$ We first multiply 2.08 by 45 and then add the results with 1.5 and 10. The solution is:

$$1,5 + 10 + 2,08 \cdot 45 = 1,5 + 10 + 93,6 = 105,1$$

5) $$12,08 \cdot 100 - 75,6 \cdot 11$$ We first multiply 12.08 by 100 and 75.6 by 11. Then we subtract the second result from the first one. The solution is:

$$12,08 \cdot 100 - 75,6 \cdot 11 = 1208 - 831,6 = 376,4$$

6) $$46,131 \cdot 10 + 91,05 \cdot 100$$ We first multiply 46.131 by 10 and 91.05 by 100. Then we add the results together. The solution is:

$$46,131 \cdot 10 + 91,05 \cdot 100 = 461,31 + 9105 = 9566,31$$

I hope this helps. If you have any other math questions, feel free to ask me.