GCSE Secondary Maths Age 13-17 - Algebra: Algebra - Explained

GCSE Secondary Maths Age 13-17 - Algebra: Algebra - Explained

Assessment

Interactive Video

Mathematics

10th - 12th Grade

Hard

Created by

Quizizz Content

FREE Resource

The video tutorial discusses common mistakes made by students when solving equations. Steve's mistake involves incorrect expansion of brackets, while Liz's error is not considering both positive and negative solutions when taking the square root. The instructor advises reworking problems independently to better identify errors.

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5 questions

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1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What was Steve's error when expanding the equation 5(X + 2) = 47?

He subtracted 2 instead of adding.

He did not multiply 5 by 2.

He forgot to multiply 5 by X.

He added 2 instead of multiplying.

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the correct first step in solving the equation 3X^2 + 8 = 83?

Divide both sides by 3.

Add 8 to both sides.

Multiply both sides by 3.

Subtract 8 from both sides.

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What mistake did Liz make when solving for X in the equation 3X^2 = 75?

She forgot to square the result.

She did not divide by 3.

She only considered the positive square root.

She added 8 instead of subtracting.

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

When taking the square root of a number, what should you remember?

Only the positive value is valid.

Neither value is valid.

Only the negative value is valid.

Both positive and negative values are valid.

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is a useful strategy for identifying mistakes in a friend's math solution?

Rely on their calculations.

Rework the problem independently.

Ask someone else to solve it.

Ignore the problem.