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Tuesday, August 9, 2022

Algebra Practice: Problems with One Known Variable

These algebraic practice problems include one known variable. Simply plug in the given number for x and solve. I created this practice test in adaptive mode so that the correct answer appears along with the process for calculating the answer immediately after the problem is presented. Feel free to write down your answers and check them as you go.

Directions

  1. Click on the first image below to enlarge.
  2. Click on the slide or thumbnail at the bottom to advance to the next slide.

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Algebra Practice Problems with One Known Variable

Created by Katrena. All rights reserved.

What is 1+2x when x=2? Answer choices: 2, -1, 5, 23

Correct answer is 5: What is 1+2x when x=2?  1+2(2)= 1+4= 5

What is 5+4x when x=3? Answer choices are 27, 17, 12, 8

Correct answer is 17: What is 5+4x when x=3?  5+4(3)= 5+12= 17

What is 4x-2 when x=4? Answer choices: 14, 6, 8, 42

Correct answer is 14: What is 4x-2 when x=4?  4(4)-2= 16-2= 14

What is 15-3x when x=3? Possible choices: 36, 24, -18, 6

Correct answer is 6: What is 15-3x when x=3?  15-3(3)= 15-9= 6

What is 7x+20 when x=5? Possible choices: 32, 25, 55, 175

Correct answer is 55: What is 7x+20 when x=5?  7(5)+20= 35+20= 55

What is 100+15x when x=1? Possible choices are 115, 116, 251, 85

Correct answer is 115: What is 100+15x when x=1?  100+15(1)= 100+15= 115

What is 5x-5 when x=5? Possible choices: 5, 20, 30, 0

Correct answer is 20: What is 5x-5 when x=5?  5(5)-5= 25-5= 20

What is 13+2x when x=6? Possible choices: 25, 90, 39, 1

Correct answer: 25 What is 13+2x when x=6?  13+2(6)= 13+12= 25

What is 7x+58 when x=0? Possible choices: 0, 7, -51, 58

Correct answer is 58. What is 7x+58 when x=0?  7(0)+58= 0+58= 58

What is 50-7x when x=1? Possible choices: 57, 50, 43, 1

Correct answer is 43. What is 50-7x when x=1?  50-7(1)= 50-7= 43

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