Kerala Board Class 8 Mathematics Part 1 Chapter 4 - Identities

Class 8th|Kerala Board Mathematics Part IChapter 4 - Identities

Q. 1 A

Write number like this:

As in the calendar; mark four numbers in a square and find the difference of diagonal products. Is it the same for all squares of four numbers?

Q. 1 A

Write number like this:

As in the calendar; mark four numbers in a square and find the difference of diagonal products. Is it the same for all squares of four numbers?

Q. 1 B

Write number like this:

Explain why this is so, using algebra.

Q. 1 B

Write number like this:

Explain why this is so, using algebra.

Q. 1 C

Write number like this:

Instead of a square of four numbers, take a square of nine numbers and mark only the numbers at the four corners.

What is the difference of diagonal products? Explain using algebra.

Q. 1 C

Write number like this:

Instead of a square of four numbers, take a square of nine numbers and mark only the numbers at the four corners.

What is the difference of diagonal products? Explain using algebra.

Q. 2 A

In the multiplication table made earlier, take a square of nine numbers, instead of four, and mark the numbers at the four corners:

What is the difference of diagonal sums?

Q. 2 A

In the multiplication table made earlier, take a square of nine numbers, instead of four, and mark the numbers at the four corners:

What is the difference of diagonal sums?

Q. 2 B

In the multiplication table made earlier, take a square of nine numbers, instead of four, and mark the numbers at the four corners:

Explain using algebra, why this difference is the same for all such squares.

Q. 2 B

In the multiplication table made earlier, take a square of nine numbers, instead of four, and mark the numbers at the four corners:

Explain using algebra, why this difference is the same for all such squares.