Question

Tính nhanh 

a) 98.36

b) 38.2002

Answer 1

a)98.36=(100-2).36

=3600-72

=3528

b)38.2002=38.(2000+2)

=38.2000=38.2

=76000+76

=76076

Answer 2

Tính nhanh 

a) 98.36

b) 38.2002

Bài làm 

a) 98.36

=(100-2)x36

=36x100-36x2

=3600-72

=3528

b) 38.2002

=38.(2000+2)

=38x2000+38x2

=76000+76

=76076

hok tốt

Answer 3

a) 98.26

= ( 100 - 2 ) . 26

= 100.26 - 2.26

= 2600 - 52

= 2548

b) 38.2002

= 38 . ( 2000 + 2 )

= 38.2000 + 38.2

= 76000 + 76

= 76076

Answer 4

a) 98 . 36 = ( 100 - 2 ) . 36 = 100.36 - 2.36 = 3528