Rational Numbers
Marcus dives from the surface of the ocean to a reef 18 meters below sea level. What integer represents Marcus’s location relative to the surface?
-18
-3 + -8
-11
-5 - (-10)
5
-2 xx8
-16
When adding integers with the same sign we _______ and keep the ________ sign.
add
common
Which of these situations can be represented by the integer -25? (select all that apply)
a) A scuba diver is 25 feet below the surface of the ocean
b) Leo gets paid $25
c) An airplane descends 25 feet
d) Sara has a $25 debt
A, C, and D
-18 + 6
-12
-13 - (5)
-18
(-45)/9
-5
When adding integers with different signs we ____________ and keep the sign of the number with the ______________ absolute value.
subtract
bigger
An elevator goes up 7 floors and then down 4 floors. What integer represents the change in the floor level? _________________
3
-4 + -10
-14
30 - (-7)
37
(-20)//(-5)
4
When subtracting integers we ______, ________, _________
keep
change
change
Change the fraction into a decimal and decide if it is terminating or repeating.
3/4
0.75 terminating
-15 + 20
5
46 - (-7)
53
(-5) xx (-12)
60
When multiplying and dividing integers with the same sign the answer is always ______________.
positive
Change the fraction into a decimal and decide if it is terminating or repeating.
3/11
0.27 repeating
-2.75 + -3.7
-6.45
-56.9 - (-7.8)
-49.1
60 // -15
-4
When multiplying and dividing integers with different signs the answer is always ______________.
negative