Name ____________________
Time: ________
Date ___ / ___ / ___
Score ________
SolveX (Number Dojo Level 131)
Middle School Worksheet Set D
Instructions: Give yourself 5 minutes to complete as many problems as you can. Score this worksheet like a
Number Sense test, giving yourself 5 points for every correct answer, less 4 points for every skipped or incorrect
answer. High score is a 200.
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If 5x = 25, then 3x + 7 = _______
If 12m + 16 = 8, then m = ______
If 9m + 8 = 9 – 5m, then m = ___
If 15 = n/6 + 19, then n = ______
If 8n + n – 3n = 5, then n = _____
If 5 – 4x = 25, then x = ________
If 56 – 4x = -56, then x = _______
If 4x – 7 = 25, then x = ________
If 4x + 9 = 23, then 4x – 1 = ____
If 7x + 5 = 82, then x = ________
If 3x – 4 = 11, then 30x – 40 = _____
If 9x = 84, then x = ______ (mixed #)
If 9 – 7x = 11, then x = ________
If 3x + 4 = 101, then 3x + 2 = ___
If 9x + 15 = 63, then 3x + 5 = ___
If 2x – 3 = 7, then 2x(2x – 3) = _____
If 2x + 5 = 17, then 25(2x + 5) = ____
If 4k + 5k – k = 104, then k = ___
If x + 4 = 13, then 13x + 52 = ___
If 2x + 9 = 13, then 20x + 90 = _____
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If 8 – x = 3, then 3x – 8 = ______
If 3x + 5 = 1, then 6x – 1 = _____
Let 5x – 3 = 1. Then 4x + 2 = ___
If 3x + 4 = 7 then 5 – 6x = ______
If 4 – 3x = 10, then 3x + 4 = ____
If 5x + 4 = 3x – 2, then x = ______
If x – 3 = 5 then 3x + 5 = _______
If 21 – 3x = 15 then 3x – 14 = ___
If 4x + 2 = 8 then 2x – 15 = _____
If 5 – 2x = 3, then 2 + 3x = _____
If 5x – 1 = 9, then x – 5 = ______
If 6x – 4 = 2, then x – 8 = ______
If 7x – 5 = 3, then 7x + 1 = _____
If 2x + 3 = 5x – 9, then x = ______
If 3x – 5 = 15 – x, then 2x + 1 = _____
If 4x – 19 = 7 – 2x, then x = _____
If 2x + 9 = 7 + 4x, then 4x – 1 = _____
If 5 – 2x = 4x + 7, then x = ______
If 2x + 5 = 5x – 7, then 4x + 3 = _____
If 2 – 3x = 8, then 2x + 8 = _____
- - - - - - - - - - - - - - - Fold the bottom portion under - - - - - - - - - - - - - - Answer Key
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22
-2/3
1/14
-24
5/6
-5
28
8
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10)
11)
12)
13)
14)
15)
16)
13
11
110
9 1/3
-2/7
99
21
70
17)
18)
19)
20)
21)
22)
23)
24)
425
13
169
130
7
-9
5 1/5
-1
25)
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29)
30)
31)
32)
-2
-3
29
-8
-12
5
-3
-7
© 2016 by Number Dojo, www.NumberDojo.com
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9
4
11
13/3
3
-1/3
19
4