Find product by using appropriate property:(i) 26 x (- 48) + (-48) x (

1.	Find product by using appropriate property:(i) 26 x (- 48) + (-48) x (-56)(ii) 8 x (78) x (-125)(iii) 9 x (50 – 2)(iv) 999 x 45
Answer» (i) 26 x (-48) + (-48) x (-56) = (48) x 26 + (-48) x (-56) = (-48) x [26 + (-56)] = ( 48) x [26 – 56] = 48 x (-30) = 1440 (ii) 8 x 78 x (-125) = [8 x (-125)] x 78 = -1000 x 78 = -78000 (iii) 9 x (50 – 2) = 9 x 50 – 9 x 2 = 450 – 18 = 432 (iv) 999 x 45 = (1000 – 1) x 45 = 1000 x 45 – 45 = 45000 – 45 = 44955

Find product by using appropriate property:(i) 26 x (- 48) + (-48) x (-56)(ii) 8 x (78) x (-125)(iii) 9 x (50 – 2)(iv) 999 x 45

Answer»

(i) 26 x (-48) + (-48) x (-56)

= (48) x 26 + (-48) x (-56)
= (-48) x [26 + (-56)]
= ( 48) x [26 – 56] = 48 x (-30)
= 1440

(ii) 8 x 78 x (-125)

= [8 x (-125)] x 78

= -1000 x 78

= -78000

(iii) 9 x (50 – 2)

= 9 x 50 – 9 x 2

= 450 – 18

= 432

(iv) 999 x 45

= (1000 – 1) x 45

= 1000 x 45 – 45

= 45000 – 45

= 44955