Integers
You gain 8 points.
"The integer is ___ because ___ means increase/decrease."
+8
\(5\ \square\ -3\)
\(5\ \>\ -3\)
-6 + 10 = ?
-6 + 10 = 4
The temperature is 6°C. It drops 9°C. What is the new temperature?
6°C - 9°C = -3°C
Answer: The new temperature is -3°C.
Write the expression:
The sum of a number and 9
x+9
x-5
Bonus 50 pts: Write out answer!
Expression
Bonus:
The difference of a number and 5
A submarine is 25 feet below sea level.
"The integer is ___ because ___ means increase/decrease."
-25
\(-4\ \square\ -9\)
\(-4\ \>\ -9\)
-8 + (-7) = ?
-8 + (-7) = -15
A football team gains 18 yards and then loses 25 yards. What is the total change in yards?
18 + (-25) = -7
Answer: The football team had a total change of -7 yards.
Write the expression:
Three times a number
3x
x+9=17
Bonus 50 pts: Write out answer!
Equation
Bonus:
The sum of a number and 9 is 17
You withdraw $40 from your bank account.
"The integer is ___ because ___ means increase/decrease."
-40
\(-12\ \square\ -12\)
\(-12\ \=\ -12\)
12 - (-5) = ?
12 - (-5) = 17
You have $150 in your bank account and spend $190. What is your new balance?
$150 - $190 = -$40
Answer: The new bank account balance is -$40.
Write the expression:
Six less than a number
x-6
Five times a number
Bonus 50 pts: Write out answer!
Expression
Bonus:
5x
The temperature drops 17 degrees.
"The integer is ___ because ___ means increase/decrease."
-17
\(0\ \square\ -15\)
\(0\ \>\ -15\)
(-7)(-4) = ?
(-7)(-4) = 28
A scuba diver is at -35 feet. The diver rises 12 feet. What is the new depth?
-35 + 12 = -23
Answer: The scuba diver’s new depth is -23 feet.
Write the expression:
A number divided by 4
x/4
A number divided by 6 is 8
Bonus 50 pts: Write out answer!
Equation
Bonus:
x/6=8
An elevator goes down 12 floors and then up 5 floors. What integer represents the total change?
"The integer is ___ because ___ means increase/decrease."
-7
\(-21\ \square\ -18\)
\(-21\ < -18\)
(-4)(-3)÷6 = ?
(-4)(-3)÷6 = 2
A hiker climbs 220 feet, descends 310 feet, and then climbs 50 feet. What is the total change in elevation?
220 + (-310) + 50 = -40
Answer: The hiker’s total change in elevation is -40 feet.
Write the expression:
Four more than twice a number
2x+4
3x+4=9
Bonus 50 pts: Write out answer!
Equation
Bonus:
3 times a number increased by 4 is 9