Question

efectuează împărțirile, folosind descomplunerea:24:2,55:5,36:3,44:2,68:2,39:3,96:3,84:4.​

Answer 1

Răspuns:

Explicație pas cu pas:

24 : 2 = ( 20 + 4) : 2 = 20 : 2 + 4 : 2 = 10 + 2 = 12

55 : 5 = ( 50 + 5 ) : 5 = 50 : 5 + 5 : 5 = 10 + 1 = 11

36 : 3 = ( 30 + 6 ) : 3 = 30 : 3 + 6 : 3 = 10 + 2 = 12

44 : 2 = ( 20+20 + 4) : 2 = 20:2 + 20: 2 + 4:2 = 10+10 + 2 = 22

68 : 2 = (60+8) : 2 = 60: 2 + 8 : 2 = 30 + 4 = 34

sau: ( 20 + 20 + 8) : 2 = 20:2 + 20 : 2 + 20:2 + 8:2 = 10+10+10+4=34

39 : 3 = ( 30 + 9) : 3 = (30:3) + 9:3 = 10 + 3 = 13

96 : 3 = ( 90 + 6 ) : 3 = 90 : 3 + 6 : 3 = 30 + 2 = 32

sau: (30+30+30+6):3 = 30:3+30:3+30:3+6:3 = 10+10+10+2 = 32

84 : 4 = ( 80 + 4) : 4 = 80 : 4 + 4 : 4 = 20 + 1 = 21

sau:

(40+40+4) : 4 = 40:4 + 40 : 4 + 4 : 4 = 10+10+1 = 21