Question

1.calculati :
a)47+259
b)147-88
c)2000-(357+124-49)
d)1+2+3+......+20
2.aflati termenul necunoscut din :
a)x+1237=2000
b)x-154=1732
c)457-x=104
d)349+x=743
3.alexandra,andreea si adi au impreuna 1600 de lei . calculati ce suma are fiecare daca andreea are cu 200 de lei mai mult decat adi ,iar alexandra are cat andreea si adi la un loc.
4.folosind proprietatile adunarii,calculati :
a)347+206+443+194
b)2005+291+995+2109
5. comparati numerele x,y,z,daca y-x=46si z-x=21
6.daca a+b=325 si c+d=137,atunci calculati:
a)a+b+c+d
b)a+b-c-d
DAU COROANA DAR REPEDE E URGEN E PT MAINE VA ROGGGGGGGG!!!!!!:)))))))

Answer 1

1.47+259=306  147-88=59  2000-(357+124-49)=1568  2.x+1237=2000 2000-1237=763  x=763  1237+763=2000   x-154=1732  1732+154=1886 x=1886 1886-154=1732  457-x=104 457-104=353 x=353 104+353=457