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All questions of Addition and Subtraction for Class 5 Exam

How do you round numbers for estimation in addition?
  • a)
    To the nearest ten only
  • b)
    By ignoring the smallest digits
  • c)
    Always to the next highest number
  • d)
    To the nearest hundred, thousand, or other values as needed
Correct answer is option 'D'. Can you explain this answer?

For estimation in addition, numbers can be rounded to the nearest ten, hundred, thousand, or other values as required for accuracy. This flexibility allows for quick approximations that are useful in practical applications.

What should you write when you have a carry over in addition?
  • a)
    The ones digit of the sum in the current column
  • b)
    Only the carry over digit
  • c)
    The total sum in the next column
  • d)
    Nothing
Correct answer is option 'A'. Can you explain this answer?

Gunjan Lakhani answered
When there is a carry over in addition, you write the ones digit of the sum in the current column and carry over the tens digit to the next column. This step is crucial for maintaining the accuracy of the addition.

What is a key step in finding missing digits in an addition problem?
  • a)
    Use subtraction to find missing digits
  • b)
    Ignore carry overs
  • c)
    Check the sum of the ones column first
  • d)
    Start with the largest place value
Correct answer is option 'C'. Can you explain this answer?

Edu Impact answered
A key step in finding missing digits is to check the sum of the ones column first. This approach allows you to determine what digit is needed to complete the sum, taking carry overs into account as you move left through the place values.

Which of the following operations is the opposite of addition?
  • a)
    Exponentiation
  • b)
    Multiplication
  • c)
    Subtraction
  • d)
    Division
Correct answer is option 'C'. Can you explain this answer?

The operation that is the opposite of addition is subtraction. Understanding the relationship between these two operations is fundamental in mathematics, as they are often used together in various calculations.

In subtraction with borrowing, if a digit is 0, what should you do?
  • a)
    Subtract directly
  • b)
    Ignore it
  • c)
    Write it as a negative number
  • d)
    Borrow from the next non-zero digit
Correct answer is option 'D'. Can you explain this answer?

Edu Impact answered
If a digit is 0 during subtraction with borrowing, you should borrow from the next non-zero digit. This process ensures that you can perform the subtraction correctly across all columns, maintaining accuracy in the calculation.

What does the term 'minuend' refer to in subtraction?
  • a)
    The result of the subtraction
  • b)
    The number from which another number is subtracted
  • c)
    The smaller number
  • d)
    The number being added
Correct answer is option 'B'. Can you explain this answer?

Dr Manju Sen answered
The term 'minuend' refers to the number from which another number (the subtrahend) is subtracted. Knowing these terms aids in understanding and solving subtraction problems more effectively.

When adding large numbers without carry over, what is the maximum sum of digits in a column?
  • a)
    10
  • b)
    9
  • c)
    11
  • d)
    5
Correct answer is option 'B'. Can you explain this answer?

Dr Manju Sen answered
When adding large numbers without carry over, the maximum sum of digits in any column must be less than 10. This ensures that the addition can be completed without needing to carry any value to the next column.

What is the first step in the process of adding large numbers?
  • a)
    Arrange the numbers in columns based on their place values
  • b)
    Add the digits in the tens place first
  • c)
    Start from the leftmost column
  • d)
    Write the total sum above the numbers
Correct answer is option 'A'. Can you explain this answer?

Gunjan Lakhani answered
The first step in adding large numbers is to arrange them in columns based on their place values, such as ones, tens, hundreds, etc. This organization helps ensure that each digit is correctly aligned for addition, making the calculation straightforward.

In borrowing, what is the main purpose of adjusting the place values?
  • a)
    To simplify the calculation
  • b)
    To reduce the size of the numbers
  • c)
    To ensure you can perform the subtraction accurately
  • d)
    To confuse the process
Correct answer is option 'C'. Can you explain this answer?

Gunjan Lakhani answered
The main purpose of adjusting the place values when borrowing is to ensure that you can perform the subtraction accurately. This adjustment prevents errors and ensures that each column is handled correctly.

What is the estimated total population if there are 12,645 men, 11,378 women, and 5,798 children?
  • a)
    29,500
  • b)
    29,821
  • c)
    30,000
  • d)
    29,800
Correct answer is option 'D'. Can you explain this answer?

Dr Manju Sen answered
By rounding each number to the nearest hundred (12,600 for men, 11,400 for women, and 5,800 for children), the estimated total population is 29,800. Estimation helps provide a quick overview without precise calculations, which is useful in many real-life scenarios.

When creating word problems based on addition, what is an essential component to include?
  • a)
    Abstract concepts
  • b)
    A real-life context or scenario
  • c)
    Only numbers
  • d)
    Complicated calculations
Correct answer is option 'B'. Can you explain this answer?

Edu Impact answered
An essential component of creating word problems based on addition is including a real-life context or scenario. This approach makes the problems relatable and helps students understand the practical applications of addition.

When borrowing in subtraction, what happens to the digit in the next higher place value?
  • a)
    It decreases by one
  • b)
    It becomes zero
  • c)
    It increases by one
  • d)
    It remains unchanged
Correct answer is option 'A'. Can you explain this answer?

Dr Manju Sen answered
When borrowing in subtraction, the digit in the next higher place value decreases by one. This adjustment allows for the current place value to have enough to perform the necessary subtraction, demonstrating an important concept in arithmetic.

What is the difference between 87,632 and 42,102?
  • a)
    45,530
  • b)
    46,000
  • c)
    45,000
  • d)
    44,530
Correct answer is option 'A'. Can you explain this answer?

Kds Coaching answered
The difference between 87,632 and 42,102 is 45,530. Subtraction requires careful alignment of numbers and attention to detail to ensure proper borrowing when needed, which can significantly affect the outcome.

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