Subtraction Of Whole Numbers

1) Which of the following symbols represents subtraction?

+

-

X

÷

The symbol "-" represents subtraction. It is used to indicate the operation of taking away or deducting one quantity from another. For example, in the expression 5 - 3, the "-" symbol is used to subtract 3 from 5, resulting in a value of 2.

Explanation

The symbol "-" represents subtraction. It is used to indicate the operation of taking away or deducting one quantity from another. For example, in the expression 5 - 3, the "-" symbol is used to subtract 3 from 5, resulting in a value of 2.

2) 9 - 6 = 4

True or False?

True

False

The given equation 9 - 6 = 4 is false. The correct answer is false because subtracting 6 from 9 gives the result 3, not 4.

Explanation

The given equation 9 - 6 = 4 is false. The correct answer is false because subtracting 6 from 9 gives the result 3, not 4.

3) Solve this subtraction question using a pencil and paper:
(no calculators allowed)

41 - 5 =

The subtraction question requires subtracting 5 from 41. When subtracting, we start from the rightmost digit and subtract the corresponding digits. In this case, 1 minus 5 is not possible, so we borrow 1 from the tens place, making the ones place 11. Then, we subtract 5 from 11, resulting in 6. Therefore, the answer is 36.

Explanation

The subtraction question requires subtracting 5 from 41. When subtracting, we start from the rightmost digit and subtract the corresponding digits. In this case, 1 minus 5 is not possible, so we borrow 1 from the tens place, making the ones place 11. Then, we subtract 5 from 11, resulting in 6. Therefore, the answer is 36.

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4) To subtract means to remove a number of items from any quantity and finding out how many items are left over. True or False?

True

False

The given statement correctly defines subtraction as the process of removing a certain number of items from a quantity and determining the remaining amount. Therefore, the correct answer is True.

Explanation

The given statement correctly defines subtraction as the process of removing a certain number of items from a quantity and determining the remaining amount. Therefore, the correct answer is True.

5) Solve this subtraction question using a pencil and paper:
(no calculators allowed)

725 - 693 =

The correct answer is 32 because when subtracting 693 from 725, we start by subtracting the ones place, which gives us a difference of 2. Then, we move to the tens place and subtract 9 from 2, which requires borrowing from the hundreds place. After borrowing, we subtract 9 from 12, giving us a difference of 3 in the tens place. Finally, we subtract 6 from 7 in the hundreds place, resulting in a difference of 1. Therefore, the final answer is 32.

Explanation

The correct answer is 32 because when subtracting 693 from 725, we start by subtracting the ones place, which gives us a difference of 2. Then, we move to the tens place and subtract 9 from 2, which requires borrowing from the hundreds place. After borrowing, we subtract 9 from 12, giving us a difference of 3 in the tens place. Finally, we subtract 6 from 7 in the hundreds place, resulting in a difference of 1. Therefore, the final answer is 32.

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6) What is the first step to solving a subtraction problem?

Panic

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Rewrite the problem all lined up in columns from the right to the left.

The first step to solving a subtraction problem is to rewrite the problem all lined up in columns from the right to the left. This allows for easy alignment of the digits and ensures that the subtraction is done correctly. By organizing the numbers in columns, it becomes easier to subtract the corresponding digits and carry over when necessary. This step sets the foundation for accurately solving the subtraction problem.

Explanation

The first step to solving a subtraction problem is to rewrite the problem all lined up in columns from the right to the left. This allows for easy alignment of the digits and ensures that the subtraction is done correctly. By organizing the numbers in columns, it becomes easier to subtract the corresponding digits and carry over when necessary. This step sets the foundation for accurately solving the subtraction problem.

7) Solve this subtraction question using a pencil and paper:
(no calculators allowed)

12403 - 1943 =

To solve this subtraction problem, start by subtracting the ones place (3 - 3 = 0). Then, move on to the tens place (0 - 4 = -4). Since you cannot have a negative number in the tens place, borrow 1 from the hundreds place, making it 2. Now, subtract (10 + 0 - 4 = 6) in the tens place. Finally, subtract the hundreds place (1 - 9 = -8). Again, borrow 1 from the thousands place, making it 3. Subtract (11 + 2 - 9 = 4) in the hundreds place. Therefore, the final answer is 10460.

Explanation

To solve this subtraction problem, start by subtracting the ones place (3 - 3 = 0). Then, move on to the tens place (0 - 4 = -4). Since you cannot have a negative number in the tens place, borrow 1 from the hundreds place, making it 2. Now, subtract (10 + 0 - 4 = 6) in the tens place. Finally, subtract the hundreds place (1 - 9 = -8). Again, borrow 1 from the thousands place, making it 3. Subtract (11 + 2 - 9 = 4) in the hundreds place. Therefore, the final answer is 10460.

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9) What are some other words used to describe a subtraction operation?
(Click ALL that apply)

Minus

Total

Decrease

Icrease

Take away

The words "minus," "decrease," and "take away" are all used to describe a subtraction operation. "Minus" is a commonly used term in mathematics to indicate subtraction. "Decrease" is a word that implies a reduction or subtraction of a quantity. Similarly, "take away" suggests removing or subtracting something. Therefore, all three words are appropriate descriptions of a subtraction operation.

Explanation

The words "minus," "decrease," and "take away" are all used to describe a subtraction operation. "Minus" is a commonly used term in mathematics to indicate subtraction. "Decrease" is a word that implies a reduction or subtraction of a quantity. Similarly, "take away" suggests removing or subtracting something. Therefore, all three words are appropriate descriptions of a subtraction operation.

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