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Subtracting Integers Test
About Subtracting Integers:

When we subtract integers, we change the subtraction problem to addition of the opposite. For example: -5 - 7 = -5 + (-7) = -12. We always keep the first number the same, change the subtraction to addition, and change the sign of what’s being subtracted away.

Test Objectives:

•Demonstrate the ability to change a subtraction problem to addition of the opposite

•Demonstrate the ability to perform a subtraction with two integers

•Demonstrate the ability to perform a subtraction with more than two integers

Subtracting Integers Test:




#1:


Instructions: Perform each subtraction.


a) 6 - 8


b) 11 - 17


c) -15 - 9


d) -12 - 22


e) -14 - 115


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#2:


Instructions: Perform each subtraction.


a) -7 - 8


b) -4 - (-2)


c) -1 - 99


d) -70 - (-12)


e) -18 - (-13)


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#3:


Instructions: Perform each subtraction.


a) 3 - 8 - 6 - 17


b) 5 - 3 - 7 - 11


c) -7 - (-9) - 4 - 9


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#4:


Instructions: Perform each subtraction.


a) -15 - (-25) - 17 - (-8) - 4


b) -27 - (-103) - 81 - 54 - (-13)


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#5:


Instructions: Perform each subtraction.


a) -90 - 27 - (-7) - 14 - (-28) - 11


b) -45 - 300 - (-4) - (-2) - 39 - (-73)


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Written Solutions:




#1:


Solution:


a) 6 - 8 = -2


b) 11 - 17 = -6


c) -15 - 9 = -24


d) -12 - 22 = -34


e) -14 - 115 = -129


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#2:


Solution:


a) -7 - 8 = -15


b) -4 - (-2) = -2


c) -1 - 99 = -100


d) -70 - (-12) = -58


e) -18 - (-13) = -5


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#3:


Solution:


a) 3 - 8 - 6 - 17 = -28


b) 5 - 3 - 7 - 11 = -16


c) -7 - (-9) - 4 - 9 = -11


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#4:


Solution:


a) -15 - (-25) - 17 - (-8) - 4 = -3


b) -27 - (-103) - 81 - 54 - (-13) = -46


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#5:


Solution:


a) -90 - 27 - (-7) - 14 - (-28) - 11 = -107


b) -45 - 300 - (-4) - (-2) - 39 - (-73) = -305


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