Question

Nilai rata-rata ulangan matematika adalah...
a.7,3
b.7,5
c.7,7
d.8,1

Answer 1

Verified answer

Bab Mean
Sekolah Dasar Kelas VI / Ujian Nasional

= ( ( 5 x 1 ) + ( 6 x  2 ) + ( 7 x 8 ) + ( 8 x 5 ) + ( 9 x 1 ) + ( 10 x 1 ) ) : 18
= ( 5 + 12 + 56 + 40 + 9 + 10 ) : 18
= 132 : 18
= 7,3 (a)

Answer 2

5 x 1 = 5
6 x 2 = 12
7 x 8 = 56
8 x 5 = 40
9 x 1 = 9
10 x 1 = 10

(5+12+56+40+9+10) : (1+2+8+5+1+1)
132 : 18 = 7,3

jadi , nilai rata-rata ulangan matematika adalah 7,3 (A)

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