TBQ - Compare the products — task. Maths CBSE Live product, Class 8 (2026-27).

Which is larger? Find out without fully multiplying it.

27 \times 81

28 \times 80

Solution:

On comparing the product

28 \times 80

with

27 \times 81

, the product

28 \times 80

can be rewritten as:

(i + i) (i - i)

The distributive property used is

The value of \(b - a - 1\) \(=\) .

Thus, the value of \(b -a -1\) is \(0\).

Therefore,

27 \times 81

28 \times 80

Did you find an error?

5. TBQ - Compare the products