a,36,4.99+36+0,4
=36,4.99+36,4
=36,4(99+1)
=36,4.100
=3640
b,77,28.20,2+23,72.20,2-20,2
=20,2.(77,28+23,72-1)
=20,2.100
=2020
a) 36,4 x 99 + 36 + 0,4 = 36,4 x 99 + ( 36+0,4)
= 36,4 x 99 +36,4
= 36,4 x ( 99 + 1 )
= 36,4 x 100
= 3640
b) 77,28 x 20,2 + 23,72 x 20,2 - 20,2 = 20,2 x ( 77,28+23,72-1)
= 20,2 x 100
= 2020
a) 36,4x 99 +36,4=36,4.(99+1) =36,4 x100=3640
b) =20,02x ( 77,28 + 23,72 - 1) = 20,02x 100= 2002