﻿ GreeneMath.com - Absolute Value Test
Absolute Value Test

The absolute value of a number is the distance from the number to zero on the number line. For example, the absolute value of four is simply four. This is because four is four units away from zero on the number line. We ask for the absolute value by placing a number inside of “| |”.

Test Objectives:

•Demonstrate the ability to find the absolute value of a number

•Demonstrate the ability to determine the relationship between absolute value expressions

•Demonstrate the ability to simplify an expression that contains the absolute value operation

Absolute Value Test:

#1:

Instructions: Find the absolute value for each.

a) |-2395|

b) |-1|

c) |975|

d) |641|

e) |-11|

f) |-18|

g) |0|

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#2:

Instructions: Replace the ? with "<", ">", or "=".

a) |-3| ? |25|

b) |-7| ? |15|

c) |31| ? |-31|

d) |752| ? |-5015|

e) |0| ? -25

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#3:

Instructions: Replace the ? with "<", ">", or "=".

a) |75 + 22| ? |-79|

b) |32 x 5 - 7| ? |-115|

c) |102 ÷ 4 + 8| ? |32|

d) |(53 ÷ 5 + 11| ? |2(6 - 4) + 92|

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#4:

Instructions: Simplify

a) -|-173|

b) -(-(-(-|34 - 8|)))

c) -(-(-|-212|))

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#5:

Instructions: Simplify

a) -(-|22 ÷ 4|) + |5 + 7|

b) -(-(-(-|62 ÷ 9 + 7|)))

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Written Solutions:

#1:

Solution:

a) |-2395| = 2395

b) |-1| = 1

c) |975| = 975

d) |641| = 641

e) |-11| = 11

f) |-18| = 18

g) |0| = 0

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#2:

Solution:

a) |-3| < |25|

b) |-7| < |15|

c) |31| = |-31|

d) |752| < |-5015|

e) |0| > -25

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#3:

Solution:

a) 79 = 79

b) 38 < 115

c) 33 > 32

d) 36 < 85

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#4:

Solution:

a) -|-173| = -173

b) -(-(-(-|34 - 8|))) = 73

c) -(-(-|-212|)) = -212

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#5:

Solution:

a) -(-|22 ÷ 4|) + |5 + 7| = 13

b) -(-(-(-|62 ÷ 9 + 7|))) = 11

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