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a fost răspuns

1. Calculaţi: a) o doime din: 430 kg; 250 de minute: 128 m; 324 de lei; b) o treime din: 21 m; 39 kg: 102 ; 504 lei; c) un sfert din: 16 kg: 64 m; 120 cm; 536 t ​

Răspuns :

Zgripceairina

Explicație pas cu pas:

a)

1/2×430=430:2=215kg

1/2×250=250:2=125minute

1/2×128=128:2=64m

1/2×324=324:2=162lei

b)

1/3×21=21:3=7m

1/3×39=39:314kg

1/3×102=102:3=34

1/3×504=504:3=168lei

c)

1/4×16=16:4=4kg

1/4×64=64:4=16m

1/4×120=120:4=30cm

1/4×536=536:4=134t

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