Question

Q12 Find the sum using associative property

(a) 127 + ( 189 + 73)

(b) (65 + 19 )+ 15​

Answer 1

Answer:

(a) 127+(189+73)

= 127+262

= 389

(a) (65+19)+15

=84+15

=99

Answer 2

$\underline { \pink { Associative \: Property: }}$

$\boxed { \blue { a + ( b + c ) = ( a + b ) + c }}$

$a ) Here , a = 127 , b= 189 \: and \: c = 73$

$127+ ( 189 + 73 ) \\= (127 + 73 ) + 189 \\= 200 + 189 \\= 389$

$b ) Here , a = 65 , b= 19\: and \: c = 15$

$(65+ 19) + 15 \\= ( 65 + 15 ) + 19 \\= 80 + 19 \\= 99$

Therefore.,

$\red{ 127+ ( 189 + 73 ) }\green { = 389 }$

$\red{(65+ 19) + 15} \blue { = 99 }$

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