Question

13. Calculați:
a) |81 +(-37) + (-25) + |311|;
b) (-4) + |39| +(63) + (171);
c) 1611 +(-5)+1-241 +(-70);
d)(–57) + (-6) + |18| + |-351|;
e) |15| +(-72) + |38| +(-3);
f) |-261 + (-9) + |43| +(-49).
​

Answer 1

a)81-37-25+311=

44-25+311

19+311=330

b)-4+39+63+171=

35+63+171=269

c)1611-5+1-241-70=

1607-311=1296

d)-63+18-351=

-45-351=-396

e)15-72+38-3=

-57+38-3=

-19-3=-22

f)daca ai scris |-261| atunci

261-9+43-49=

252+43-49=

295-49=246