KS2 Primary Maths Age 9-13 - Number and Place Value: Adding Whole Numbers - Explained

The video tutorial explains how to add two numbers, 89,994 and 7,643, while emphasizing the importance of avoiding commas in mathematical calculations to prevent confusion with decimal points. The instructor highlights cultural differences in comma usage and advises against using commas in math problems. The tutorial provides a step-by-step guide on aligning numbers correctly for addition and performing the calculation without commas, resulting in the sum of 97,637.

Why is it important to be cautious with commas in numbers?

• They can change the value of the number.

• They make numbers look prettier.

• They are not necessary in mathematics.

• They are used differently in various cultures.

What is the teacher's advice regarding the use of commas in numbers?

• Always use them to separate thousands.

• Use them only in decimal numbers.

• Avoid using them to prevent confusion.

• Use them as per your preference.

How should numbers be aligned for addition?

• Align them by their place value.

• Align them by the decimal point.

• Align them by the leftmost digit.

• Align them randomly.

What is the result of adding 89,994 and 7,643?

• 97,763

• 97,736

• 97,673

• 97,637

Why should commas be avoided in the final result of the addition?

• They are difficult to write.

• They are not allowed in exams.

• They can be mistaken for decimal points.

• They make the number look longer.