SOAL & Kunci Jawaban Matematika Kelas 7 SMP Ulangan/Ujian Semester 1 Lengkap Pembahasan Soal MTK

S = teorema universal
A = serial Doraemon
B = serial Pokemon
A ∩ B = suka keduanya
dik :
A = 30 anak
B = 20 anak-anak
(A∩ B) = 19 anak-anak
Dit: n (S) …?
Pembahasan: n (S) = (A) + (B) – (A ∩ B)
n (S) = 30 + 20 – 19
n (S) = 31

3. Jika P = {angka asli <5 xss=removed xss=removed>A. 1
B. 2
C. 3
D. 4

Jawaban: A

P= {angka alami <5>
= {1, 2, 3, 4}
Q= {angka <6>
= {0, 1, 2, 3, 4, 5}
R = {angka ganjil <6>
= {1, 3, 5}
(Q ∩ R) = {1, 3, 5}
P – (Q ∩ R) = ({1, 2, 3, 4} – {1, 3, 5})
n (P – (Q ∩ R)) = 4 – 3
= 1

Baca juga: Latihan Soal PKN Kelas 7 Ulangan/Ujian Semester 1 Kurikulum Merdeka Tahun 2023 Lengkap Kunci Jawaban

4. Jika B = {x | -5 ≤ x ≤ 15, x є merupakan bilangan bulat}, maka nilai n dari (B) ialah ….
A. 18
B. 19
C. 20
D. 21

Jawaban: D

A = {x | -5 ≤ x ≤ 15, x є bilangan angka bulat}
= {-5, -4, -3, -2, -1, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15}
(A) = 21

5. Perhatikan kotak berikut!

Maka nilai dari (A ∩ B) ialah ….

A. {4, 8, 10}
B. {1, 2, 3, 5, 6, 7, 9}
C. {3, 4, 5, 7, 8, 10}
D. {3, 5, 7}

Jawaban: D

A = {1, 3, 5, 6, 7, 9}
B = {2, 3, 5, 7}
A ∩ B = {3, 5, 7}

6. Diketahui bahwa nilai S = {0, 1, 2, …., 20} , nilai B = {x | x <18>A. {0,18,19,20}
B. {18,19,20}
C. {0,18}
{0}

Jawaban: A

S = {0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 18, 19, 20}
B = {x | x <18>
= {1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17}