Question

ДАЮ 20 БАЛЛОВ ЗА ВСЕ ЭТО!(МНОГИМ ВЫПОЛНИТЬ ЭТО НЕ ТРУДНО) Умножти в СТОЛБИК! В СТОЛБИК 1.296х304 2.354х405 3.821х503 ___________ 618х906 912х708 655х802 Задача В лыжном кроссе участвовали 450 мальчиков и девочек. Мальчики составляли 4 всех участников кросса. -- (четыре пятых) 5 Половина девочек и треть мальчиков сошли с дистанции . Сколько лыжников пришло к финишу?

Answer 1

1.
    296
    304
  1184
888     
89984

      354
      405
    1770
1416    
143370

      821
      503
    2463
4105    
412963

      618
      906
    3708
5562    
559908

      912
      708
    7296
6384    
645696

      655
      802
    1310
5240    
525310

Задача:

450*4/5 = 90*4 = 360 мальчиков участвовало.
450-360 = 90 девочек участвовало.
90:2 = 45 девочек сошли с дистанции
360:3 = 120 мальчиков сошли с дистанции
45+120 = 165 ребят сошло с дистанции.
450-165 = 285 лыжников финишировали.

Answer 2

Multiplication Calculation:

To calculate the multiplication in a column, we can multiply each pair of numbers and write the result below. Here's the calculation:

1.296 x 304 = 394.944 2.354 x 405 = 953.67 3.821 x 503 = 1,920.563 618 x 906 = 560,508 912 x 708 = 645,696 655 x 802 = 525,910

Therefore, the multiplication in the column is: 394.944 953.67 1,920.563 560,508 645,696 525,910

Cross-Country Skiing Problem:

In the cross-country skiing race, there were a total of 450 participants, including both boys and girls. The boys made up 4/5 (or four-fifths) of all the participants, and the remaining participants were girls.

To find out how many boys and girls participated, we can use the given information. Let's solve the problem step by step:

Step 1: Calculate the number of boys: 4/5 of the total participants = (4/5) x 450 = 360 boys

Step 2: Calculate the number of girls: Total participants - Number of boys = 450 - 360 = 90 girls

Step 3: Calculate the number of participants who finished the race: Half of the girls and one-third of the boys dropped out of the race. So, the number of participants who finished the race is: (1/2) x 90 + (2/3) x 360 = 45 + 240 = 285

Therefore, 285 participants came to the finish line.

I hope this helps! Let me know if you have any further questions.