Explicație pas cu pas:
a)
[tex] \bf 225 \cdot 40 - 321 \cdot 20 = [/tex]
[tex]\bf 9000 - 6420 = [/tex]
[tex] \blue{\bf \underline{2 \: 580}}[/tex]
---------------------------
[tex] \bf 456 \cdot13 + 215 \cdot 18 = [/tex]
[tex]\bf 5928 + 3870 = [/tex]
[tex] \green{\bf \underline{9 \: 798}}[/tex]
---------------------------
[tex] \bf 763 \cdot 13 - 405\cdot 23 = [/tex]
[tex] \bf 9919 - 9315= [/tex]
[tex] \purple{\bf \underline{604} }[/tex]
---------------------------
[tex] \bf 204\cdot 11 + 386 \cdot13 = [/tex]
[tex]\bf 2244 + 5018 = [/tex]
[tex] \red{ \underline{\bf 7262}} [/tex]
b)
[tex] \bf (154\cdot 25 - 3675) \cdot24 = [/tex]
[tex] \bf (3850 - 3675) \cdot24 = [/tex]
[tex]\bf 175 \cdot24 = [/tex]
[tex] \green{\bf \underline{4200}}[/tex]
---------------------------
[tex] \bf(216 \cdot28 -5 859) \cdot 42 =[/tex]
[tex]\bf(6048 -5 859) \cdot 42 =[/tex]
[tex]\bf189 \cdot 42 =[/tex]
[tex] \blue{ \underline{\bf 7938}}[/tex]
---------------------------
[tex] \bf (3480 + 3 520): 100\cdot 48 =[/tex]
[tex] \bf 7000 : 100\cdot 48 =[/tex]
[tex]\bf 70 \cdot 48 =[/tex]
[tex] \purple{\bf \underline{3360}}[/tex]
---------------------------
[tex] \bf (359\cdot 27 + 307): 100\cdot 67 = [/tex]
[tex]\bf (9693 + 307): 100\cdot 67 = [/tex]
[tex]\bf 10000: 100\cdot 67 = [/tex]
[tex]\bf 100\cdot 67 = [/tex]
[tex] \red{\bf \underline{ 6700 }}[/tex]
[tex] = = pav38 = = [/tex]
