KS2 Primary Maths Age 13-17 - Calculations: Word Problems - Explained

The video tutorial discusses Adam's approach to solving a subtraction problem using mental methods. It evaluates three different methods to subtract 97 from 182, identifying which are correct. The first method is incorrect, the second is correct, and the third is incorrect. The tutorial emphasizes the importance of identifying correct methods and explains the marks allocation for the task.

What is the main task Adam is trying to accomplish?

• Multiply 182 by 97

• Divide 182 by 97

• Subtract 97 from 182

• Add 97 to 182

Which method correctly represents subtracting 97 from 182?

• Subtract 3, then subtract 100

• Add 100, then subtract 3

• Subtract 100, then add 3

• Add 3 to 182, then subtract 90

Why is the method of subtracting 7 and then 90 considered correct?

• It results in subtracting 103

• It results in subtracting 97

• It results in subtracting 100

• It results in subtracting 90

What is the consequence of selecting an incorrect method?

• You receive partial marks

• You receive no marks

• You receive full marks

• You receive a bonus mark

How many correct methods must be identified to receive full marks?

• Three correct methods

• Two correct methods

• Four correct methods

• One correct method