ACT Math : How to subtract even numbers

Study concepts, example questions & explanations for ACT Math

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Example Questions

Example Question #1 : How To Subtract Even Numbers

Evaluate:  

Possible Answers:

Correct answer:

Explanation:

First solve by evaluating the ones digit.  Carry over a 1 from the  so that the value of the ones digit can be evaluated.

After the carry over, the  becomes a .  This value will be used for the tens digit of the next term.  The hundreds digit will become zero.

Evaluate the tens digit.

Combine the tens digit and the ones digit.

The final answer is .

Example Question #521 : Arithmetic

Solve:

Possible Answers:

Correct answer:

Explanation:

1. First subtract the ones digits:

So the ones digit will be a 0.

2. Next subtract the tens digit borrowing the 1 from the hundreds digit:

So the tens digit will be a 6.

3. Add the tens and ones digits together:

Example Question #2 : How To Subtract Even Numbers

Solve:

Possible Answers:

Correct answer:

Explanation:

1. First subtract the ones digits borrowing a 1 from the tens digit:

So the ones digit will be a 6.

2. Next subtract the tens digit borrowing the 1 from the hundreds digit:

So the tens digit will be a 8.

3. Next add the hundreds, tens and ones digits together:

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