Expressions
When you write an expression given a word problem that talks about an elevator. Does the negative sign represent going up or down?
Down
Draw a vertical number line, show 4 - 3 and give an answer
1 with drawing.
Draw a horizontal number line, show 7 - 3 and give an answer
4 with line
what is the opposite of 10?
-10
Use absolute value symbol to show how you would represent the question what is the absolute value of -34
|-34|
Write an expression that models the following: Bergocious entered an elevator at floor 0. He went down 4 floors then went up 2.
-4 + 2
Draw a vertical number line, show -4 - 3 and give an answer
-7 with drawing
Draw a horizontal number line, show -2 - 5 and give an answer
-7 with line
True or False, when you add two opposites you get double the number
False
Which has a larger absolute value?
-40 or 33
-40
Write the numerical expression as a word problem using an elevator
5 - 8
Something like Josephius went up 5 floors then went down 8
Draw a vertical number line, show 8- 10 and give an answer
-2 with drawing
Draw a horizontal number line, show 5 - 7 and give an answer
-2 with line
True or False; If I were to subtract -40 + 25 using opposites, I would do 15 -25 + 25 and the answer is 15
False
Are the signs the same or different?
23 - 55
Different
Write an expression that models the following
Horatio entered an elevator at floor 0. He went down 4 floors then down another 5.
-4 - 5 or -4 + (-5)
Draw a vertical number line, show -2 + 2 and give an answer
0 with drawing
Draw a horizontal number line, show -5 + 5 and give an answer
0 with line
Solve by showing opposites
-35 + 42
-35 + 35 + 7
7
True or False
When you see that the signs are the same, you have to subtract the bigger absolute value minus the smaller one.
False
Write a word problem involving an elevator from the following expression: 8 - 2
something about going up 8 floors then down 2
Draw a vertical number line, show -2 - 6 and give an answer
-8 with line
Draw a horizontal number line, show -5 - 5 and give an answer
-10 with line
Solve by showing the opposites
110 - 123
110 - 110 - 13
-13
Show all 3 steps to the problem
-44 - 60
S
44 + 60
-104