Question

         b) 78.31+ 78.24+ 78.17+ 78.72 

Answer 1

\(78\cdot31+78\cdot24+78\cdot17+78\cdot72\)

\(=78\left(31+24+17+72\right)\)

\(=78\cdot144=11232\)

Answer 2

78(31 + 24 + 17 + 72) = 78.144 = 11232

Answer 3

=78.(31+24+17+72)
=78.144
=11232

Answer 4

\(b,78.31+78.24+78.72=78.\left(31+24+72\right)=78.144=11232\)

Answer 5

78.31+ 78.24+ 78.17+ 78.72 =78.(31+24+17+72)=78.144=11232.

Answer 6

= 78.(31+24+17+72)

= 78.144=11232

Answer 7

  78.31+78.24+78.17+78.72

=78.31+(78.72+78.17)+78.24

=78.31+156.89+78.24

=235.2+78.24

=313.44