TBQ - Compare the products — task. Maths CBSE Live product, Class 8.

Which is larger? Find out without fully multiplying it.

21 \times 71

22 \times 70

Solution:

On comparing the product

22 \times 70

with

21 \times 71

, the product

22 \times 70

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,

21 \times 71

22 \times 70

Did you find an error?

5. TBQ - Compare the products