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Теория: Деление натуральных чисел на трехзначные числа

Задание

Найдите пропущенные числа:

 

 \(\displaystyle 5\)\(\displaystyle 3\)\(\displaystyle 0\)\(\displaystyle 4\)\(\displaystyle 4\)\(\displaystyle 5\)\(\displaystyle 9\)\(\displaystyle 6\)
\(\displaystyle –\)        
  \(\displaystyle 8\) 
  \(\displaystyle 5\)\(\displaystyle 3\)\(\displaystyle 6\)\(\displaystyle 4\)   
 \(\displaystyle –\)      
  \(\displaystyle 5\)\(\displaystyle 3\)\(\displaystyle 6\)\(\displaystyle 4\)   
     \(\displaystyle 0\)   

 

 

Решение

Найдем пропущенные числа при делении в столбик:

 

 \(\displaystyle 5\)\(\displaystyle 3\)\(\displaystyle 0\)\(\displaystyle 4\)\(\displaystyle 4\)\(\displaystyle 5\)\(\displaystyle 9\)\(\displaystyle 6\)
\(\displaystyle –\)        
 \(\displaystyle {\small?}\)\(\displaystyle {\small?}\)\(\displaystyle {\small?}\)\(\displaystyle {\small?}\) \(\displaystyle 8\)\(\displaystyle {\small?}\) 
  \(\displaystyle 5\)\(\displaystyle 3\)\(\displaystyle 6\)\(\displaystyle 4\)   
 \(\displaystyle –\)       
  \(\displaystyle 5\)\(\displaystyle 3\)\(\displaystyle 6\)\(\displaystyle 4\)   
     \(\displaystyle 0\)   

 

1. Первая цифра в частном \(\displaystyle 8{\small,}\) поэтому под числом \(\displaystyle 5304\) записываем число \(\displaystyle 4768={\bf 8}\cdot 596{\small.}\)

 

 \(\displaystyle 5\)\(\displaystyle 3\)\(\displaystyle 0\)\(\displaystyle 4\)\(\displaystyle 4\)\(\displaystyle 5\)\(\displaystyle 9\)\(\displaystyle 6\)
\(\displaystyle –\)        
 \(\displaystyle \bf 4\)\(\displaystyle \bf 7\)\(\displaystyle \bf 6\)\(\displaystyle \bf 8\) \(\displaystyle \bf 8\)\(\displaystyle {\small?}\) 
  \(\displaystyle 5\)\(\displaystyle 3\)\(\displaystyle 6\)\(\displaystyle 4\)   
 \(\displaystyle –\)       
  \(\displaystyle 5\)\(\displaystyle 3\)\(\displaystyle 6\)\(\displaystyle 4\)   
     \(\displaystyle 0\)   

 

2. Далее вычитаем из числа \(\displaystyle 5304\) число \(\displaystyle 4768\) (\(\displaystyle 5304-4768=536\)) и сносим цифру разряда единиц числа \(\displaystyle 5304{\bf4}\) (это цифра \(\displaystyle {\bf 4}\)). Получаем число \(\displaystyle 5364{\small.}\)

 

 \(\displaystyle 5\)\(\displaystyle 3\)\(\displaystyle 0\)\(\displaystyle 4\)\(\displaystyle \bf 4\)\(\displaystyle 5\)\(\displaystyle 9\)\(\displaystyle 6\)
\(\displaystyle –\)        
 \(\displaystyle 4\)\(\displaystyle 7\)\(\displaystyle 6\)\(\displaystyle 8\) \(\displaystyle 8\)\(\displaystyle {\small?}\) 
  \(\displaystyle \bf 5\)\(\displaystyle \bf 3\)\(\displaystyle \bf 6\)\(\displaystyle \bf 4\)   
 \(\displaystyle –\)       
  \(\displaystyle 5\)\(\displaystyle 3\)\(\displaystyle 6\)\(\displaystyle 4\)   
     \(\displaystyle 0\)   

 

3. Под числом \(\displaystyle 5364\) стоит число \(\displaystyle 5364{\small,}\) которое равно \(\displaystyle 5364=596\cdot {\bf 9} {\small,}\) значит, записываем \(\displaystyle 9\) во второй ячейке частного.

 \(\displaystyle 5\)\(\displaystyle 3\)\(\displaystyle 0\)\(\displaystyle 4\)\(\displaystyle 4\)\(\displaystyle 5\)\(\displaystyle 9\)\(\displaystyle 6\)
\(\displaystyle –\)        
 \(\displaystyle 4\)\(\displaystyle 7\)\(\displaystyle 6\)\(\displaystyle 8\) \(\displaystyle 8\)\(\displaystyle \bf 9\) 
  \(\displaystyle 5\)\(\displaystyle 3\)\(\displaystyle 6\)\(\displaystyle 4\)   
 \(\displaystyle –\)       
  \(\displaystyle 5\)\(\displaystyle 3\)\(\displaystyle 6\)\(\displaystyle 4\)   
     \(\displaystyle 0\)   

Ответ:

 

 \(\displaystyle 5\)\(\displaystyle 3\)\(\displaystyle 0\)\(\displaystyle 4\)\(\displaystyle 4\)\(\displaystyle 5\)\(\displaystyle 9\)\(\displaystyle 6\)
\(\displaystyle –\)        
 \(\displaystyle \bf 4\)\(\displaystyle \bf 7\)\(\displaystyle \bf 6\)\(\displaystyle \bf 8\) \(\displaystyle 8\)\(\displaystyle \bf 9\) 
  \(\displaystyle 5\)\(\displaystyle 3\)\(\displaystyle 6\)\(\displaystyle 4\)   
 \(\displaystyle –\)       
  \(\displaystyle 5\)\(\displaystyle 3\)\(\displaystyle 6\)\(\displaystyle 4\)   
     \(\displaystyle 0\)