Three-Digit Addition and Subtraction Quiz

What is the first step in adding three-digit numbers with regrouping?

• Ignore the tens column

• Add numbers randomly

• Use column labels

• Start with the largest value

When adding 452 and 179, what is the sum of the ones column?

• 9

• 12

• 11

• 10

What should you do if the sum of a column in addition is a two-digit number?

• Write both digits in the same column

• Ignore the tens digit

• Carry over the tens digit to the next column

• Subtract the tens digit from the sum

Why is it important to start with the smallest value in subtraction?

• To make the process faster

• To avoid errors in borrowing

• To ensure the largest number is on top

• To simplify the problem

In subtraction, what should you do if the top number is smaller than the bottom number in a column?

• Skip the column

• Subtract the bottom number from 10

• Borrow from the next column

• Add 10 to the top number

What is the result of 452 minus 335?

• 137

• 127

• 107

• 117

In the subtraction example, what happens to the tens column when borrowing occurs?

• It is ignored

• It decreases by one

• It remains unchanged

• It increases by one

What is the key difference between addition and subtraction in terms of column placement?

• Subtraction allows any order

• Addition requires the smaller number on top

• Subtraction requires the larger number on top

• Addition requires random placement

What should you do if you encounter a negative result in a subtraction column?

• Switch the numbers

• Add 10 to the result

• Borrow from the next column

• Ignore it

What is the purpose of using column labels in addition and subtraction?

• To confuse the students

• To make the process faster

• To avoid mistakes by clearly identifying place values

• To make the numbers look neat