KS2 Primary Maths Age 13-17 - Ratio, Proportion and Algebra: Finding Missing Numbers - Explained

The video tutorial explains how to find a missing number in a subtraction problem. The teacher demonstrates the process by subtracting 5 from 341, adjusting the numbers as needed, and arriving at the answer 336. The solution is verified through addition, ensuring the correctness of the result. The tutorial concludes with a confirmation of the correct answer and the allocation of one mark for the question.

What is the initial number from which 5 is subtracted in the problem?

• 345

• 341

• 331

• 351

What is the first step taken when 1 cannot be subtracted from 5?

• Subtract 1 from the tens place

• Add 10 to the units place

• Add 5 to the units place

• Borrow 1 from the tens place

After borrowing, what is the result of 11 minus 5?

• 5

• 7

• 8

• 6

What is the final answer obtained after completing the subtraction?

• 336

• 338

• 337

• 335

What is the purpose of performing an addition after the subtraction?

• To calculate the total marks

• To check for errors in addition

• To find a new number

• To verify the subtraction result