Fill in the blanks with the correct digits.

Question

Вопрос:

Fill in the blanks with the correct digits.

Ответ:

ФИО:Телефон:Емаил:Полное описание сути нарушения прав (почему распространение данной информации запрещено Правообладателем):

Accepted Answer

Instruction:

Fill in the blanks with the correct digits to make the equations true.

Logic: These are basic arithmetic problems. For addition, the sum of the two numbers should equal the result. For subtraction, the difference between the top number and the bottom number should equal the result. We need to find the missing digits that satisfy these conditions.

Problems:

Problem 1:
```
  45 + 34 = 79
```
Problem 2:
```
  68 + 26 = 94
```
Problem 3:
```
  75 - 45 = 30
```
(The image shows '75 - ?5 = 30' with a 5 in the units place of the subtrahend and 30 as the result. To get 0 in the units place of the result, the units digit of the subtrahend must be 5. So, 5 - 5 = 0. For the tens place, 7 - ? = 3. The missing digit is 4. So, 74 - 45 = 30. However, the image shows '75 - 45 = 30' which implies the missing digit is 4. Let's re-examine the image. It shows 75 - 25 = 50. The image shows '75 - _5' with the result '30'. For the units place, 5 - 5 = 0. For the tens place, 7 - ? = 3. So the missing digit is 4. The problem is written as 75 - _5 = 30. If the missing digit is 4, then it would be 75 - 45 = 30. This matches the result. The box is for the tens digit of the subtrahend. So, it is 4.)
Problem 4:
```
  92 - 47 = 45
```
(The image shows '92 - 4_ = 45'. To get 5 in the units place of the result, we need to subtract a number from 2 that results in 5. This means we borrow from the tens place. So, 12 - ? = 5, which means the missing digit is 7. For the tens place, after borrowing 1, we have 8. So, 8 - 4 = 4. This matches the result. The missing digit is 7.)

Solution:

In the first problem, 45 + 34 = 79. The given numbers are correct.
In the second problem, 68 + 26 = 94. The given numbers are correct.
In the third problem, we have 75 - □5 = 30. For the units digit, 5 - 5 = 0. For the tens digit, 7 - □ = 3. Thus, the missing digit is 4. So, 75 - 45 = 30.
In the fourth problem, we have 92 - 4□ = 45. For the units digit, we need to find a digit such that when subtracted from 2 (after borrowing from the tens place), results in 5. This means 12 - □ = 5. Therefore, the missing digit is 7. For the tens digit, after borrowing, we have 8. So, 8 - 4 = 4. This matches the result. Thus, the missing digit is 7. So, 92 - 47 = 45.

Final Answer:

45 + 34 = 79

68 + 26 = 94

75 - 45 = 30

92 - 47 = 45