`(-25) xx 8 + (-25) xx 2 = ?`

(-25) xx 8 + (-25) xx 12 = …….

Find the product of: (-2) xx (+50) xx (-25) xx 4

What is the value of (2.75 xx 2.75 xx 2.75 - 2.25 xx 2.25 xx 2.25)/(2.75 xx 2.75 + 2.75 xx 2.25 + 2.25 xx 2.25) = ?

0.25xx0.8 = ?

4 xx 538 xx 25=?

1/(5 xx 6) + 1/(6 xx 7) + 1/(7 xx 8) + ….. + 1/(24 xx 25) ?

Find the value of 2.1 + 2.25 div [ 63 - {7.5 xx 8 + (13- 2. 5 xx 5) }].

24 xx 25 = 24 xx

Prove the following: 103 xx 25 = (100 + 3) xx 25 = (100 xx 25) + (3 xx 25)