III.

1/ 218+282=500

2/(-95)+(-105)=-95-105=-200

3/38+(-85)=38-85=-47

4/47-107=-60

5/25+(-8)+(-25)+(-2)=25-8-25-2=-10

6/18-(-2)=18+2=20

7/-16-5-(-21)=-16-5+21=0

8/-11+23-(-21)=-11+23+21=33

9/-13 -15+5=-23

10/58.75+58.50-58.25=58.(75+50-25)=58.100=5800

11/20:2^2-5^9:5^8=20:4 - 5=5-5=0

12/(5^19:5^17 - 4) :7=(25-4):7=21:7 =3

13/-84:4+3^9:3^7+5^0=-21+9+1=-11

14/295-(31-2^2.5)^2=295-(31-20)^2=295-121=174

15/11^25:11^23 - 3^5:(1^10+2^3)-60=11^2 - 3^5:(1+8)-60=121 - 3^4 -60=121-81-60=-20

16/29-[16+3(51-49)]=29-(16+3.2)=29-(16+6)=29-22=7

17/47-(45.2^4-5^2.12):14=47-(5.3^2.2^4 -5^2.3.2^2):14=47-(3.4-5):14=47-(7:14)=47-1/2=93/2

18/10^2-60:(5^6:5^4-3.5)=100-60:(25-15)=100-60:10=100-6=94

19/2345-1000:[19-2(21-18)^2]=2345-1000: ( 19-2.9)=2345-1000:(19-18)=2345-1000:1=2345-1000=1345

20/205-[1200 -(4^2-2.3)^3]:40=205-[1200-(16-6)^3]:40=205-(1200-10^3):40=205-(1200-1000):40=205-200:40=205-5=200

IV

a,(15+37)+(52-37-17)=15+37+52-37-17=50

b,(38-42+14)-(25-27-15)=38-42+14-25+27+15=27

c,-(21-32)-(-12+32)=-21+32+12-32=-9

d,-(12+21-23)-(23-21+10)=-12-21+23-23+21-10=-22

e,(57-725)-(605-53)=57-725-605+53=-1220

f,(55+45+15)-(15-55+45)=55+45+15-15+55-45=110

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