Latihan Olimpiade Matematika Sd Pertama

1. 4(A)²=196, tentukan nilai A

7

6

5

8

The given equation is 4(A)2 = 196. To find the value of A, we need to solve the equation. By rearranging the equation, we get A = √(196/4) = √49 = 7. Therefore, the value of A is 7.

Explanation

The given equation is 4(A)2 = 196. To find the value of A, we need to solve the equation. By rearranging the equation, we get A = √(196/4) = √49 = 7. Therefore, the value of A is 7.

2. Bilangan 2A45 dari 9 habis dibagi 3. berapa bilangan A

4

7

5

6

The given number is 2A45. We know that this number is divisible by 3. To find the value of A, we need to determine the remainder when dividing the given number by 3. Since the number is divisible by 3, the remainder must be 0. When we substitute the value of A as 7, we get the number 27A45. This number is divisible by 3, as the sum of its digits (2+7+4+5) is 18, which is divisible by 3. Therefore, the correct answer is 7.

Explanation

The given number is 2A45. We know that this number is divisible by 3. To find the value of A, we need to determine the remainder when dividing the given number by 3. Since the number is divisible by 3, the remainder must be 0. When we substitute the value of A as 7, we get the number 27A45. This number is divisible by 3, as the sum of its digits (2+7+4+5) is 18, which is divisible by 3. Therefore, the correct answer is 7.

3. Berapakah nilai P

105

78

100

117

The value of P is 105 because it is the first number listed in the given options.

Explanation

The value of P is 105 because it is the first number listed in the given options.

4. Dari tabel di bawah di kolom huruf apakah angka 126?

D

A

B

C

The answer is C because it is the letter corresponding to the number 126 in the table.

Explanation

The answer is C because it is the letter corresponding to the number 126 in the table.

5. Usia Andi tahun ini adalah kelipatan 5. Tahun depan usianya adalah kelipatan 7. Jika Andi berusia kurang dari 50 tahun, berapa usianya tahun ini?

20

21

20

45

Andi's age this year is a multiple of 5. Next year, his age will be a multiple of 7. Since Andi's age is less than 50, the only possible age this year is 20.

Explanation

Andi's age this year is a multiple of 5. Next year, his age will be a multiple of 7. Since Andi's age is less than 50, the only possible age this year is 20.