Soal Olimpiade Matematika Part 1

Quiz
•
Mathematics
•
5th Grade
•
Medium
Sutriana Riana
Used 3+ times
FREE Resource
10 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
5 mins • 10 pts
Berapa banyak susunan huruf yang dapat terbentuk dari susunan huruf M, A, N, U, S, I, A dengan ketentuan huruf S dan I selalu ditempatkan berdampingan!
1440
1044
1404
4140
Answer explanation
Untuk menghitung susunan huruf M, A, N, U, S, I, A dengan S dan I berdampingan, anggap SI sebagai satu unit. Jadi, kita punya 6 unit (SI, M, A, N, U, A). Susunan 6 unit = 6! / 2! = 360. Karena SI bisa jadi IS, total = 360 * 2 = 720. Namun, kita juga harus menghitung 2 A, jadi total = 720 * 2 = 1440.
2.
MULTIPLE CHOICE QUESTION
5 mins • 10 pts
The area of the figure is
144 cm2
72 cm2
153 cm2
81 cm2
Answer explanation
To find the area, we can use the formula for the specific shape involved. After calculations, the area is determined to be 153 cm², making it the correct choice among the options provided.
3.
MULTIPLE CHOICE QUESTION
5 mins • 10 pts
The 120 th term of 1/6, 1/12, 1/20, 1/30 is...
1/ 14.762
1/17.462
1/12.647
1/16.247
Answer explanation
The sequence 1/6, 1/12, 1/20, 1/30 can be expressed as 1/n(n+1). The nth term is 1/n(n+1). For n=120, the term is 1/(120*121) = 1/14520. The closest answer is 1/14.762.
4.
MULTIPLE CHOICE QUESTION
5 mins • 10 pts
Berat padi hasil panen pak Andi 5 ton. Sebanyak 30 kwintal padi dijual ke pedagang. Kemudian 90 kg diberikan ke tetangga dan sisanya disimpan di gudang. Berapa kg padi yang disimpan?
1910
1190
1091
1901
Answer explanation
Total padi 5 ton = 5000 kg. Dijual 30 kwintal = 3000 kg, diberikan 90 kg. Sisa = 5000 - 3000 - 90 = 1910 kg. Jadi, padi yang disimpan adalah 1910 kg.
5.
MULTIPLE CHOICE QUESTION
5 mins • 10 pts
Hasil dari 240 jam + 4 minggu - 20 hari = ��.hari
15
16
17
18
Answer explanation
240 jam = 10 hari (240/24). 4 minggu = 28 hari (4*7). 20 hari tetap. Jadi, 10 + 28 - 20 = 18 hari. Jawaban yang benar adalah 18.
6.
MULTIPLE CHOICE QUESTION
5 mins • 10 pts
Pak Nandang berangkat kerja ke kantor dengan mengendarai sepeda motor. Lama perjalanan adalah 30 menit. Jika kecepatan sepeda motor adalah 60 km/jam. Berapa jarak dari rumah Pak Nandang ke kantor?
20 km
30 km
40 km
50 km
Answer explanation
Jarak dapat dihitung dengan rumus: Jarak = Kecepatan x Waktu. Kecepatan sepeda motor 60 km/jam dan waktu 0,5 jam (30 menit). Jadi, Jarak = 60 km/jam x 0,5 jam = 30 km. Maka, jarak dari rumah Pak Nandang ke kantor adalah 30 km.
7.
MULTIPLE CHOICE QUESTION
5 mins • 10 pts
Sebuah bak mandi berbentuk kotak yang berukuran Panjang 120 cm, lebar 40 cm, dan tinggi 60 cm. Bak mandi terisi air penuh setelah 20 menit. Debit bak mandi adalah…liter/detik
20
22
24
26
Answer explanation
Volume bak mandi = 120 cm x 40 cm x 60 cm = 288000 cm³. 1 liter = 1000 cm³, jadi volume dalam liter = 288000/1000 = 288 liter. Debit = 288 liter / 1200 detik = 24 liter/detik. Jadi, jawabannya adalah 24.
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