Question

1. tính

a. 48.19+48.115+134.52

b. 27.121-87.27+73.34

Answer 1

a, 48.19 + 48.115 + 134.52

= 48 . ( 19 + 115 ) + 134.52

= 48 . 134 + 134 . 52

= 134 . ( 48 + 52 )

= 134 . 100

= 13400

b, 27 . 121 - 87 . 27 + 73 . 34

= 27 . ( 121 - 87 ) + 73 . 34

= 27 . 34 + 73 . 34

= 34 . ( 27 + 73 )

= 34 . 100

= 3400

Answer 2

a, 48 . 19 + 48 . 115 + 134 . 52

= 48 . ( 19 + 115 ) + 134 . 52

= 48 . 134 + 134 . 52

= ( 48 + 52 ) . 134

= 100 . 134

= 13400

b, 27 . 121 - 87 . 27 + 73 . 34

= 27 . ( 121 - 87 ) + 73 . 34

= 27 . 34 + 73 . 34

= ( 27 + 73 ) . 34

= 100 . 34

= 3400

Answer 3

1.a.48.19+48.115+134.52=48.(19+115)+134.52

=48.134+134.52

=134.(52+48)

=134.100=13400

1.b 27.121-87.27+73.34=27.(181-87)+73.34

=27.34+73.34

=(27+73).34

=100.34=3400

Answer 4

a/48.19+48.115+134.52

=48.(19+115)+134.52

=48.134+134.52

=134.(48+52)

=134.100

=13400

b/27.121-87.27+73.34

=27.(121-87)+73.34

=27.34+73.34

=34.(27+73)

=34.100

=3400

Answer 5

a.48.19+48.115+134.52

=912+5520+6968

=13400

b.27.121-87.27+73.34

=3267-2349+2482

=3400