Vocabulary
What is an integer?
Positive and negative whole numbers
-3+3=
0
13-7=
6
You walk into a hotel lobby and you take the elevator up to the 6th floor and then back down to the lobby. Write a number sentence, then solve.
6+(-6)=0
what is the additive inverse of 243 is ....
-243
What is a natural number (example and definition)?
basic counting numbers
1,2,3,4,5...
-12+6=
-6
6-21
-15
Your friend lends you $5 for lunch. the next day you pay them back. Write expression, then solve. Must do a MODEL!!!
5+(-5)=0
and model
What is the difference between a subtraction sign and a negative sign
NOTHING!!
What is a rational number?
integers, fractions, decimals
23+(-57)=
-34
1112-1067
45
Your bank account has a balance of $-21. You deposit $50. What is your new balance? Write a number sentence and solve.
(-21)+50=29
List 4 words that we use for the addition symbol.
Example: combine, in all, together, positive, increase, plus....
What is additive inverse?
Two numbers that have sum of zero (zero pair).
-10+(-32)=
-42
10-(-21)=
31
At midnight, the temperature 30 F degrees. By 6:00 A.M it had dropped 5 degrees and by 1:00 it had increased by 11 degrees. What was the temperature at noon?
30-5+11=36 degrees
What is the Order of Operations?
a set of rules that tell you which operation to perform in a specific order.
GEMDAS
What is a Irrational number?
Real numbers that cannot be written as a fraction. Decimals that DON'T STOP and DON'T REPEAT.
8+(-4)+11=
15
18-(-4)-5
17
Some number added to -11 is 37. Divide this number by -12. Then multiply by -8. What is the final number?
32
What are the inverse operations?
multiplication-division
addition-subtraction