8th Grade Modular Inverses Quizzes, Questions & Answers

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Using Multiplicative Inverse To Solve Equations

When we talk about multiplicative inverse in mathematics, we are in other words talking about using a reciprocal for a number x which results in 1 when multiplied by the number x. Pretty confusing right? Well, with enough...

Questions: 5 | Attempts: 211 | Last updated: Mar 20, 2025

Sample Question 1
Solve the following:6/15 x = 60

X = 5400

X = 24

X = 2/3

X = 150

Sample Question 2
Solve the following:12/30 x = -27

X = 67.5

X = 9720

X = -10.8

X = -67.5

Sample Question 3
Solve the following:4/15 x + 8/20 = 23/60

X = - 1/16

X = 1/16

X = 1 13/32

X = 31/300