Question

a) 98 x 31 + 62

b) 635 x 2

c) 375 x 4

Answer 1

a) 98 x 31 + 62

= 31 x ( 98 + 2 ) 

=31 x 100

= 3100

b) 635 x 2 =1270

c) 375 x 4 =1500

 

Answer 2

a) \(98.31+62=98.31+31.2=31.\left(98+1\right)=31.100=3100\)

b) \(635.2=1270\)

c) \(375.4=1500\)

Answer 3

a) 98 x 31 + 62 = 3038 + 62

                           = 3100 .

b) 635 x 2 = 1270 .

c) 375 x 4 = 1500 .