How to subtract odd numbers - GRE Quantitative Reasoning
Card 1 of 48
Assume
and
are both odd whole numbers and
.
What is a possible solution for 
Assume and
are both odd whole numbers and
.
What is a possible solution for
Tap to reveal answer
An odd whole number minus an odd whole number will result in an even whole number. Since
, the subtraction will result in a negative even whole number. The only answer that fits these requirements is
.
An odd whole number minus an odd whole number will result in an even whole number. Since , the subtraction will result in a negative even whole number. The only answer that fits these requirements is
.
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Choose the answer below which best solves the following equation:

Choose the answer below which best solves the following equation:
Tap to reveal answer

If you have trouble with problems like this, try stacking the numbers, and subtracting one place at a time. First, seven minus one is six, so that's your ones digit. Next, three minus three is zero, so that's your tens digit. Seven minus two is five, so that's your hundreds digit, and finally, one minus zero is one so that's you're thousands digit.
If you have trouble with problems like this, try stacking the numbers, and subtracting one place at a time. First, seven minus one is six, so that's your ones digit. Next, three minus three is zero, so that's your tens digit. Seven minus two is five, so that's your hundreds digit, and finally, one minus zero is one so that's you're thousands digit.
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Solve the following:

Solve the following:
Tap to reveal answer
To perform this operation, simply subtract. If you are having trouble, you can split the problem into two easier to solve portions, by splitting the numbers up:




To perform this operation, simply subtract. If you are having trouble, you can split the problem into two easier to solve portions, by splitting the numbers up:
← Didn't Know|Knew It →
Solve the following:

Solve the following:
Tap to reveal answer
To solve, simply subtract. If you have trouble subtracting, you can split the problem up and add your results back together:




To solve, simply subtract. If you have trouble subtracting, you can split the problem up and add your results back together:
← Didn't Know|Knew It →
Solve the following:

Solve the following:
Tap to reveal answer
To solve, simply subtract. If you have trouble subtracting, you can split the numbers up, subtract, and add your results:




To solve, simply subtract. If you have trouble subtracting, you can split the numbers up, subtract, and add your results:
← Didn't Know|Knew It →
Solve the following:

Solve the following:
Tap to reveal answer
To solve, simply subtract. If you have trouble subtracting, try splitting the numbers up and adding your results:




To solve, simply subtract. If you have trouble subtracting, try splitting the numbers up and adding your results:
← Didn't Know|Knew It →
Assume
and
are both odd whole numbers and
.
What is a possible solution for 
Assume and
are both odd whole numbers and
.
What is a possible solution for
Tap to reveal answer
An odd whole number minus an odd whole number will result in an even whole number. Since
, the subtraction will result in a negative even whole number. The only answer that fits these requirements is
.
An odd whole number minus an odd whole number will result in an even whole number. Since , the subtraction will result in a negative even whole number. The only answer that fits these requirements is
.
← Didn't Know|Knew It →
Choose the answer below which best solves the following equation:

Choose the answer below which best solves the following equation:
Tap to reveal answer

If you have trouble with problems like this, try stacking the numbers, and subtracting one place at a time. First, seven minus one is six, so that's your ones digit. Next, three minus three is zero, so that's your tens digit. Seven minus two is five, so that's your hundreds digit, and finally, one minus zero is one so that's you're thousands digit.
If you have trouble with problems like this, try stacking the numbers, and subtracting one place at a time. First, seven minus one is six, so that's your ones digit. Next, three minus three is zero, so that's your tens digit. Seven minus two is five, so that's your hundreds digit, and finally, one minus zero is one so that's you're thousands digit.
← Didn't Know|Knew It →
Solve the following:

Solve the following:
Tap to reveal answer
To perform this operation, simply subtract. If you are having trouble, you can split the problem into two easier to solve portions, by splitting the numbers up:




To perform this operation, simply subtract. If you are having trouble, you can split the problem into two easier to solve portions, by splitting the numbers up:
← Didn't Know|Knew It →
Solve the following:

Solve the following:
Tap to reveal answer
To solve, simply subtract. If you have trouble subtracting, you can split the problem up and add your results back together:




To solve, simply subtract. If you have trouble subtracting, you can split the problem up and add your results back together:
← Didn't Know|Knew It →
Solve the following:

Solve the following:
Tap to reveal answer
To solve, simply subtract. If you have trouble subtracting, you can split the numbers up, subtract, and add your results:




To solve, simply subtract. If you have trouble subtracting, you can split the numbers up, subtract, and add your results:
← Didn't Know|Knew It →
Solve the following:

Solve the following:
Tap to reveal answer
To solve, simply subtract. If you have trouble subtracting, try splitting the numbers up and adding your results:




To solve, simply subtract. If you have trouble subtracting, try splitting the numbers up and adding your results:
← Didn't Know|Knew It →
Assume
and
are both odd whole numbers and
.
What is a possible solution for 
Assume and
are both odd whole numbers and
.
What is a possible solution for
Tap to reveal answer
An odd whole number minus an odd whole number will result in an even whole number. Since
, the subtraction will result in a negative even whole number. The only answer that fits these requirements is
.
An odd whole number minus an odd whole number will result in an even whole number. Since , the subtraction will result in a negative even whole number. The only answer that fits these requirements is
.
← Didn't Know|Knew It →
Choose the answer below which best solves the following equation:

Choose the answer below which best solves the following equation:
Tap to reveal answer

If you have trouble with problems like this, try stacking the numbers, and subtracting one place at a time. First, seven minus one is six, so that's your ones digit. Next, three minus three is zero, so that's your tens digit. Seven minus two is five, so that's your hundreds digit, and finally, one minus zero is one so that's you're thousands digit.
If you have trouble with problems like this, try stacking the numbers, and subtracting one place at a time. First, seven minus one is six, so that's your ones digit. Next, three minus three is zero, so that's your tens digit. Seven minus two is five, so that's your hundreds digit, and finally, one minus zero is one so that's you're thousands digit.
← Didn't Know|Knew It →
Solve the following:

Solve the following:
Tap to reveal answer
To perform this operation, simply subtract. If you are having trouble, you can split the problem into two easier to solve portions, by splitting the numbers up:




To perform this operation, simply subtract. If you are having trouble, you can split the problem into two easier to solve portions, by splitting the numbers up:
← Didn't Know|Knew It →
Solve the following:

Solve the following:
Tap to reveal answer
To solve, simply subtract. If you have trouble subtracting, you can split the problem up and add your results back together:




To solve, simply subtract. If you have trouble subtracting, you can split the problem up and add your results back together:
← Didn't Know|Knew It →
Solve the following:

Solve the following:
Tap to reveal answer
To solve, simply subtract. If you have trouble subtracting, you can split the numbers up, subtract, and add your results:




To solve, simply subtract. If you have trouble subtracting, you can split the numbers up, subtract, and add your results:
← Didn't Know|Knew It →
Solve the following:

Solve the following:
Tap to reveal answer
To solve, simply subtract. If you have trouble subtracting, try splitting the numbers up and adding your results:




To solve, simply subtract. If you have trouble subtracting, try splitting the numbers up and adding your results:
← Didn't Know|Knew It →
Assume
and
are both odd whole numbers and
.
What is a possible solution for 
Assume and
are both odd whole numbers and
.
What is a possible solution for
Tap to reveal answer
An odd whole number minus an odd whole number will result in an even whole number. Since
, the subtraction will result in a negative even whole number. The only answer that fits these requirements is
.
An odd whole number minus an odd whole number will result in an even whole number. Since , the subtraction will result in a negative even whole number. The only answer that fits these requirements is
.
← Didn't Know|Knew It →
Choose the answer below which best solves the following equation:

Choose the answer below which best solves the following equation:
Tap to reveal answer

If you have trouble with problems like this, try stacking the numbers, and subtracting one place at a time. First, seven minus one is six, so that's your ones digit. Next, three minus three is zero, so that's your tens digit. Seven minus two is five, so that's your hundreds digit, and finally, one minus zero is one so that's you're thousands digit.
If you have trouble with problems like this, try stacking the numbers, and subtracting one place at a time. First, seven minus one is six, so that's your ones digit. Next, three minus three is zero, so that's your tens digit. Seven minus two is five, so that's your hundreds digit, and finally, one minus zero is one so that's you're thousands digit.
← Didn't Know|Knew It →