Question

Va rog urgent Dau corona + 27 de puncte !
:sa se efectueze desfasurat
a) 4,52x2,4-0,9997
b) 30,7+30,7x20,7
c)4,28+4,28:2
d)1+2,5:0,16
e) 100x(345:3,45+3,45:345+3,45:34,5)
f) 10x[0,78+(40,06-7,5):0,1]
g) 0,01+100x0,02+0,1x(2,4-0,4):0,01
h) 0,0001x10:0,005+10x(245-2,45)+4255,05

Answer 1

a) 9,8483 b) 666,19 c) 6,42 d) 16,625 e) 10011 f) 3263,8 g) 22,01 h) 6680,75

Answer 2

a)4,52·2,4-0,9997=
0,848-0,9997=9.8483
b)30,7+30,7·20,7=
=30,7+635,49=666.19
c)4,28+4,28:2=
=4,28+2,14=6.42
d)1+2,5:0,16=
=1+15,625=16.625
e)100·(345:3,45+3,45:345+3,45:34,5)
=100·(100+0,01+0,1)
=100·100,11=10011
f)10·[0,78+(40,06-7,5):0,1)]
=10·(0.78+32.56:0,1)
=10·(0.78+325.6)
=10·326.38=3263.8
g)0,01+100·0,02+0,1·(2,4-0,4):0,01=
0,01+100·0,02+0,1·2:0,01=
0,01+2+0.2:0,01=
0,01+2+20=22.01
h)0,0001·10:0,005+10·(245-2,45)+4255,05=
=0,001 :0,005+10·242,55+4255,05=
=0.2+2425,5 +4255,05=
=2425,7+4255,05=6680.75