Yesterday Integers Review
As you move further to the left on a number line, the number __________________ but the values _____________
number increases
value decreases
Which number represents withdrawing 25?
-25
When adding integers with same signs, what is the rule to follow?
For example: -5 + (-7)
Add the numbers and keep the same sign.
As you move further right on a number line, the number ____________ and the value also __________ .
number increases
value decreases
Which number represents a gain of 40?
40
When adding integers with different signs, what is the rule to follow?
For example = -13 + 20
Subtract the numbers, and keep the sign of the number with the bigger absolute value.
The distance a number is from zero on a number line is called its ___________ ______________ . It is always positive.
Absolute Value
Which number represents a drop of 15 degrees?
-15
Will the answer be negative or positive based on the integer rule?
-12.24 + 23.7
Positive because the absolute value of 23.7 is bigger than the absolute value of -12.24.
Numbers that are the same distance from zero on a number line but in opposite directions are called _________ _____________ .
Opposite Numbers
Which integer expression represents: The temperature at noon is -14 degrees, and at 5 o'clock, the temperature rose 5 degrees.
-14 + 5
Will the answer be negative or positive based on the integer rules?
5.76 + (-9.25)
The answer will be negative because the absolute value of -9.25 is bigger than the absolute value of 5.76.
When you add a number and its opposite, the result is always 0. These two numbers for example -5 + 5 = 0 are called ______________ inverse or __________ pair.
additive inverse
zero pair
Which integer expression represents: John has $50 in his account, he spent $30 on lunch, but received $25 from his friend.
50 - 30 + 25
50 + (-30) + 25
What is the best way to approach a question like this:
-4.35 + (-2.35 +1.75)
Use and Apply PEMDAS - Do what is in the parentheses first, then work from left to right.