Question

Find the product and check for equality 

(i) 18 x (-5) and (-5) x 18

(ii) 31 x (-6) and (-6) x 31

(iii) 4 x 51 and 51 x 4

Answer 1

(i) Here 18 x (-5) = -90 

Also (-5) x 18 = -90 

∴ 18 x (-5) = (-5) x 18

(ii) Here 31 x (-6) = -186 

Also (-6) x 31 = -186 

∴ 31 x (-6) = (-6) x 31

(iii) Here 4 x 51 = 204 

Also 51 x 4 = 204 

∴ 4 x 51 = 51 x 4