Răspuns:
partea 1
a)7×5-3×2=35-6=29
b)
[tex] \frac{4}{5} - \frac{2}{3} \times \frac{3}{5 } = \frac{4}{5} - 2 \times \frac{1}{5} = \frac{4}{5} - \frac{2}{5} = \frac{2}{5} [/tex]
c) a=123 b=273 c=437
123+273+437=833
a)
[tex]8{m}^{\ 3} + 450 {dm}^{3} + 1700 {cm}^{3} = 8 {m}^{3} + 0.45 {m}^{3} + 0.0017 {m}^{3} = 8.4517 {m}^{3} [/tex]
b)2,5 ore =2,5×60min=150 min
c)37 hm
a)240 si 245
b)20×20:100=400:100=4
c)11,22,33,44,55,66,77,88,99
a)53+59+61+67=240
b)3 si 5
c)multiplii lui 72=9 si 8
multiplii lui 48=6 si 8
multiplii lui 64=8 si 8
cel mai mic multiplu comun este 8
