Răspuns:
1)78+38=110
72-38=34
72×5=360
72÷4=18
72÷5=14 r 2
2)8759+27345=36104
51234-4768=46466
235×203=47705
76406÷253=302
3)74×107+99=8017
4)237×512+237×418=220410
237×930=220410
5)29543+52931=82474(adevarat)
6)548×(372+428)-800×448=
=548×800-800×448=
=438400-358400=
=80000
7)2coli folosim ptr o figurina
2coli×30figurine=60coli folosim
3coli ptr sfere
3coli×35sfere=105coli folosim
8)a1b ;
a+b=4 dam valori lui a si lui b
a=4;1;2;3
b=0;1;2;3
a+b=4+0=4
1+3=4
2+2=4
3+1=4
cu valorile date inlocuim nr de forma a1b:
a1b=410,113,212,311
9)10×10=100(partide jucate)
