Question

Folosind asociativitatea și comutativitatea adunării Calculați sumele.


A) s=4+77+96+19+81+54+23+100

C)s=29+62+48+99+52+71+38+1+100.

D)s=(13+27)+73+87+21+(79+34)+66.. Vă rog am nevoie urgent ​

Answer 1

Răspuns:

A) s=4+77+96+19+81+54+23+100=(4+96)+(77+23)+(19+81)+54+100=454

C)s=29+62+48+99+52+71+38+1+100=(29+71)+(62+38)+(48+52)+(99+1)+100=500

D)s=13+27+73+87+21+79+34+66=(13+87)+(27+73)+(21+79)+(34+66)=400

Answer 2

A)

S = 4 + 77 + 96 + 19 + 81 + 54 + 23 + 100

S = (4 + 96) + (77 + 23) + (19 + 81) + 54 + 100

S = 100 + 100 + 100 + 154

S = 444

C)

S = 29 + 62 + 48 + 99 + 52 + 71 + 38 + 1 + 100

S = (29 + 71) + (62 + 38) + (48 + 52) + (99 + 1) + 100

S = 100 + 100 + 100 + 100 + 100

S = 500

D)

S = 13 + 27 + 73 + 87 + 21 + 79 + 34 + 66

S = (13 + 87) + (27 + 73) + (21 + 79) + (34 + 66)

S = 100 + 100 + 100 + 100

S = 400