Question

Answer 1

f: =(1+3+...+2017)*135*137(1001-1001)

=0

c: =24*25+24*37+24*38

=24*100

=2400

a: =274+184=458

b: =29+132+868+237+163

=1000+400+29

=1429

Answer 2

d) \(98.31+62\)

\(=98.31+2.31\)

\(=31.\left(98+2\right)\)

\(=31.100\)

\(=3100\)

e) \(3.25.8+4.37.6+2.38.12\)

\(=24.25+24.37+24.38\)

\(=24.\left(25+37+38\right)\)

\(=24.100\)

\(=2400\)