Question

114 Maths-7
4.
Using a suitable property, simplify the following:
(i) 972 x 999 +972 x 1
(ii) 50 (-23) + 50 x (-17)-50 x 10
(iii) 2764 x 998 +2764 x (-42) + 2764 x 44
(iv) 4150 + 415 X(-90) + 415 x 30
Fillimh​

Answer 1

Answer:

Step-by-step explanation:

(1) 972*(999+1)

= 972 * 1000

= 972000

(2) 50×(-23)+(-17)-50×10

(remove the parenthesis and solve..)

= -1150 - 17 - 500

= -1667

(3) 2764(998-42+44)

=2764(1000)

=2764000

(4) 415(10-90+30)

=415(-50)

= -20750

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