Mistakes in Solving Equations

Mistakes in Solving Equations

Assessment

Interactive Video

Mathematics

9th - 10th Grade

Hard

Created by

Thomas White

FREE Resource

The video tutorial covers six problems focusing on solving equations and understanding mathematical concepts. It begins with analyzing solutions by May and Tyler, identifying their mistakes, and correcting them. The tutorial then provides a step-by-step solution to a second problem, followed by an explanation of solving a third problem. Andre's mistake in problem 4 is identified and corrected. Problem 5 involves matching solutions to equations, and problem 6 explores the concept of slope and ribbon length. The tutorial emphasizes understanding and applying mathematical principles effectively.

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10 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What mistake did May make when solving the equation?

She multiplied by the wrong reciprocal.

She used the wrong equation.

She forgot to divide by the coefficient.

She added a positive number instead of a negative.

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

How did Tyler incorrectly handle the equation?

He used the wrong reciprocal.

He added instead of subtracted.

He forgot to multiply all terms by 5.

He divided by the wrong number.

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the first step in solving the equation in Section 2?

Subtract a negative number.

Multiply by the reciprocal.

Distribute the coefficient.

Add a positive number.

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the final solution for x in Section 2?

x = 3/4

x = -3/4

x = 4/3

x = -4/3

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the general pattern for solving equations as described in Section 3?

Additive inverse, multiplicative inverse, distribute

Multiplicative inverse, distribute, additive inverse

Distribute, additive inverse, multiplicative inverse

Additive inverse, distribute, multiplicative inverse

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What was Andre's mistake in solving his equation?

He used the wrong coefficient.

He multiplied by the wrong number.

He did not use the distributive property correctly.

He forgot to add the additive inverse.

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the correct solution to Andre's equation?

x = -5

x = 5

x = 1

x = -1

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