OK, so what do we do it the numbers are too big for a number line?
How do we know if the answer will be positive or negative?
Let's look at one we did with small numbers:
Look at these numbers without their signs: 3 and 7
Which is bigger? The 7.
So, the answer will have that guy's sign... which is positive!
Look at this one:
Look at these and ignore the signs: 2 and 5
Who's bigger? The 5.
What's his sign? Negative. So, the answer is negative!
Next Example!!!
Who wins the sign smack down? 75
So, the answer's going to be negative.
| 1 | Ignore the signs |
| 2 | Take the biggest number and subtract off the smaller one |
And it needs to be negative.
GREAT JOB, NOW ITS TIME TO SEE IF YOU UNDERSTAND.
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