Question

a. (72 - 8 x9 ) : ( 20 + 21 + 22 + 23 + 24 + 25)

b. (500 x 9 - 250 x18 ) x (1 + 2 + 3 + ...+9)

c. (11 + 13 + 15 + ...+ 19) x (6 x 8 - 48)

Answer 1

a) ( 72 - 8x9 ) : ( 20 + 21 + 22 + 23 + 24 + 25 )

= ( 72 - 72 ) : ( 20 + 21 + 22 + 23 + 24 + 25 )

= 0 : ( 20 + 21 + 22 + 23 + 24 + 25 )

= 0

b) ( 500 x 9 - 250 x 18 ) x ( 1 + 2 + 3 + ... + 9 )

= ( 250 x 2 x 9 - 250 x 18 ) x ( 1 + 2 + 3 + ... + 9 )

= ( 250 x 18 - 250 x 18 ) x ( 1 + 2 + 3 + ... + 9 )

= 0 x ( 1 + 2 + 3 + ... + 9 )

= 0

c ) ( 11 + 13 + 15 + ... + 19 ) x ( 6 x 8 - 48 )

= ( 11 + 13 + 15 + ... + 19 ) x ( 48 - 48 )

= ( 11 + 13 + 15 + ... + 19 ) x 0

= 0

Answer 2

a) ( 72 - 8x9 ) : ( 20 + 21 + 22 + 23 + 24 + 25 )

= ( 72 - 72 ) : ( 20 + 21 + 22 + 23 + 24 + 25 )

= 0 : ( 20 + 21 + 22 + 23 + 24 + 25 )

= 0

Answer 3

b) ( 500 x 9 - 250 x 18 ) x ( 1 + 2 + 3 + ... + 9 )

= ( 250 x 2 x 9 - 250 x 18 ) x ( 1 + 2 + 3 + ... + 9 )

= ( 250 x 18 - 250 x 18 ) x ( 1 + 2 + 3 + ... + 9 )

= 0 x ( 1 + 2 + 3 + ... + 9 )

= 0

Answer 4

c ) ( 11 + 13 + 15 + ... + 19 ) x ( 6 x 8 - 48 )

= ( 11 + 13 + 15 + ... + 19 ) x ( 48 - 48 )

= ( 11 + 13 + 15 + ... + 19 ) x 0

= 0

Answer 5

a. (72-8x9) :(20+21+22+23+24+25)

=(72-72) : (20+21+22+23+24+25)

=0 : (20+21+22+23+24+25)

=0

b.(500 x 9 - 250 x 18 ) x (1+2+3+...+9)

=(500 x 9 - 250 x 2 x 9) x (1+2+3+...+9)

=(500 x 9 - 500 x 9 ) x (1+2+3+...+9)

=0 x (1+2+3+...+9)

=0

c.(11 +13 +15 +...+19) x (6 x 8 - 48)

=(11+13+15+...+19) x (48-48)

=(11+13+15+...+19) x 0

=0

Answer 6

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