KS2 Primary Maths Age 9-13 - Algebra - Equation: - Explained

The video tutorial explains how to solve the equation a * R - 5 = 11 by finding the unknown value that satisfies the equation. It demonstrates that the only way to achieve the result of 11 is by using the number 16, leading to the conclusion that 8 * R equals 16. Therefore, R must be 2. The tutorial also highlights the importance of understanding the solution process and the allocation of marks for correctly solving the equation and identifying the value of R.

What is the result when 5 is subtracted from a number to give 11?

• 6

• 5

• 11

• 16

Which number, when 5 is subtracted from it, results in 11?

• 16

• 21

• 15

• 10

If 8 times a number equals 16, what is the number?

• 8

• 16

• 4

• 2

What is the value of R if 8 * R = 16?

• 1

• 2

• 3

• 4

How many marks are awarded for correctly solving R = 2?

• Four marks

• Two marks

• Three marks

• One mark