Test: Subtraction - Class 3 MCQ

To solve 45 - 22, you subtract the ones place (5 - 2 = 3) and the tens place (4 - 2 = 2), resulting in 23. This is a straightforward subtraction without borrowing.

The calculation is straightforward: 50 - 20 = 30. This word problem exemplifies how subtraction can be used to determine remaining quantities in real-life scenarios.

Subtracting a number from itself always results in zero. This reflects the fundamental property of subtraction where any number minus itself equals zero.

Here, you borrow from the tens: turn 82 into 7 tens and 12 ones. So, 12 - 7 = 5 and 7 - 4 = 3, resulting in 35.

In expanded form, 56 is represented as 50 + 6, showing the value of each digit based on its place value.

Rounding 78 to 80 and 41 to 40 gives 80 - 40 = 40, providing a good estimate for the subtraction.

Rounding 89 to 90 and 44 to 40 gives us 90 - 40 = 50. Estimating helps simplify complex subtraction problems for quicker mental calculations.

When subtracting, you can borrow: 53 (5 tens and 3 ones) becomes 43 (4 tens and 13 ones) for the calculation: 13 - 9 = 4 and 4 - 2 = 2, giving 24.

For mixed problems, first add the numbers without a minus sign, then separately add those with a minus sign, and finally subtract the smaller sum from the larger sum to find the result.

Breaking down the numbers, 56 (50 + 6) and 23 (20 + 3), we subtract the ones (6 - 3 = 3) and the tens (50 - 20 = 30) to get 30 + 3 = 33.

Borrowing in subtraction refers to taking ten from the next higher place value when the digit in the ones place is insufficient to perform the subtraction. This allows the operation to be completed correctly.

Subtracting 1 from 116 results in 115. This illustrates the concept that subtracting one gives you the predecessor of the original number.

When you subtract one from any number, it provides the predecessor of that number, demonstrating how subtraction works in relation to numerical order.

Breaking numbers into tens and ones is a helpful strategy in mental subtraction, allowing for easier calculations without needing to write anything down.

Borrowing and regrouping refer to the same process in subtraction where you take ten from a higher place value to facilitate subtraction when the current digit is smaller.

First, add 415 and 132 to get 547. Then, add 87 and 56 to get 143. Subtracting gives 547 - 143 = 404.

In this problem, you need to borrow because 8 is less than 9. Borrowing from the tens turns 9 into 8 and makes 8 into 18. Thus, 18 - 9 = 9, and 8 - 6 = 2, resulting in 29.

Subtracting a larger number from a smaller number does not yield a positive result; it often results in a negative number or an undefined operation in basic arithmetic.

The number that is being subtracted is called the subtrahend. In a subtraction equation, the minuend is the number you start with, while the difference is the result of the subtraction.

Rounding 67 to 70 and 32 to 30 gives 70 - 30 = 40. Estimation helps simplify calculations and provides a close approximation rather than an exact answer.