# Buku Olimpiade Matematika dan IPA Untuk SMA

Berikut ini kami akan menginformasikan buku Olimpiade Matematika dan IPA Untuk SMA dari Penerbit Yrama. Ada beberapa buku yang dapat Anda miliki. Buku-buku tersebut menurut saya berkualitas bagus dan cocok bagi adik-adik di jenjang SMA, Bapak/Ibu guru pendamping olimpiade dan orang-tua siswa. Informasi pemesanan buku, hub. Heri Istiyanto di No. HP. 081227992609 (SMS atau WA)

Dari penerbit Yrama ada 8 buku yang khusus membahas Olimpiade, yaitu buku Olimpiade Matematika (Pena Emas), buku Olimpiade Fisika (OSN Fisika SMA), buku Olimpiade Biologi (OSN Biologi, Latihan Soal dan Solusi, buku Praktikkum OSN Biologi), buku Olimpiade Astronomi SMA, buku Olimpiade Kimia SMA (OSN Kimia dan Panduan OSN Kimia).

# Mathematical Olympiad for Primary School

Here we present a collection of questions **Mathematical Olympiad for ****primary school** level. Visit our website to get the continued collection of questions Mathematical Olympiad latest.

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# Mathematics Olympiad

**Mathematics** is a science that is unique. Many people who do not like science, but partly also explore the science of this. Students who are practicing about Mathematics Olympiad is one part that wants to explore the science of Mathematics. If every day was trained, it is not likely they will someday be a scientist who has a strong knowledge base and are useful for human life.

On this occasion, we will prepare questions for the Olympic School level Dasar. We hope that the children at an early age education has a strong science base, so that they become the children of the nation are useful for the world.

1. The figure is made up of a right-angled triangle and a trapezium. The sides of the right-angled triangle are in the ratio 3 : 4 : 5. What is the area of the figure if the length of the triangle’s shortest side is 18 cm?

2. The ratio of the number of apples to the number of pears in a supermarket was 5 : 2. After 630 apples were sold, the ratio the number of apples to the number of pears become 2 : 1. How many pears were there in the supermarket?

# Olympiad Math Trainer Week 4

If you have ever read my articles ablout Olympiad Math Trainer Week 2 dan Olympiad Math Trainer Week 3, please read to this post. Now, I give your some problems for Olympiad Math Trainer Week 4.

Solve these questions. Show your working clearly. Each question carries 4 marks.

1. Use simple method to calculate 99 999 x 12 345.

2. Observe the number pattern below.

121, 12.321, 1.234.321, 123.455.321, … .

What the number is the 5th term?

3. Compute 1 + 2 + 3 + … + 49 + 50 + 49 + …. + 3 +2 + 1.

# Olympiad Maths Trainer 4 For 4th Grade Week 2

This probles are Olympiad Maths Trainer 4 For 4th Grade Week 2. Solve this questions. Show your working clearly. Each questions carries 4 marks.

1. Use distributive law to calculate each of the following.

(a) 42 x 34 + 58 x 34

(b) 37 x 54 + 63 x 54

(c) 156 x 32 – 56 x 32

(d) 233 x 46 – 133 x 46

2. The first three terms of a three number pattern (1, 3, 6), (2, 6, 9), and (3, 9, 12).

Find the sum of three numbers in the 100th term.

3. Find the sum of all multiples of 5 from 5 to 20.