Question

calculati: a) 5/2+0,711+4/8; b) 2,15-0,5+4/5; c)48,01-4,801-0,4801

Answer 1

a) 5/2+0,711+4/8=
2,5+0,711+0,5=3,711

 b) 2,15-0,5+4/5=
2,15-0,5+0,8=2,45

c)48,01-4,801-0,4801
)48,01-4,801-0,4801=43,2090-0,4801=42,7289

Answer 2

a)  5/2+0,711+4/8 =
= 5/2 + 711/1000 + 4/8 =
= 5/2 + 711/1000 + 1/2 =
= (2500+711+500)/1000 =
= 3711/1000

b)  2,15-0,5+4/5 =
= 2,15 - 0,5 + 0,8 = 2,45 = 49/20

c) 48,01-4,801-0,4801 =
= 48,01 - 5,2811 = 42,7289