Olympiad Test: Knowing Our Numbers - Class 6 MCQ

# Olympiad Test: Knowing Our Numbers - Class 6 MCQ

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## 20 Questions MCQ Test Mathematics (Maths) Class 6 - Olympiad Test: Knowing Our Numbers

Olympiad Test: Knowing Our Numbers for Class 6 2024 is part of Mathematics (Maths) Class 6 preparation. The Olympiad Test: Knowing Our Numbers questions and answers have been prepared according to the Class 6 exam syllabus.The Olympiad Test: Knowing Our Numbers MCQs are made for Class 6 2024 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests for Olympiad Test: Knowing Our Numbers below.
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Olympiad Test: Knowing Our Numbers - Question 1

### What is the even prime number?

Detailed Solution for Olympiad Test: Knowing Our Numbers - Question 1

The only even prime number is 2. This is because a prime number is defined as a number greater than 1 that has no positive divisors other than 1 and itself. While all other even numbers can be divided by 2, making them not prime, 2 can only be divided by 1 and 2, making it the only even prime number.

Olympiad Test: Knowing Our Numbers - Question 2

### 1 billion = ______ million

Detailed Solution for Olympiad Test: Knowing Our Numbers - Question 2

Explanation:

• Million: One million is equal to 1,000,000.
• Billion: One billion is equal to 1,000,000,000.

To find out how many millions are in a billion, we divide 1 billion by 1 million:

• 1,000,000,000 / 1,000,000 = 1000

Therefore, 1 billion is equal to 1000 million.

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Olympiad Test: Knowing Our Numbers - Question 3

### Estimated value of 467 to nearest thousand is

Detailed Solution for Olympiad Test: Knowing Our Numbers - Question 3

The estimated value of 467 to the nearest thousand is zero because when rounding to the nearest thousand, any number below 500 will be rounded down to zero. In this case, 467 is less than 500, so it gets rounded down to zero.

Olympiad Test: Knowing Our Numbers - Question 4

Sum of 178 and 69 to nearest hundred is

Detailed Solution for Olympiad Test: Knowing Our Numbers - Question 4

To solve this, let's first find the sum of 178 and 69:

178+69=247

Now, we round 247 to the nearest hundred.

• The nearest hundred to 247 is 200 because 247 is closer to 200 than to 300.

So, the sum of 178 and 69 rounded to the nearest hundred is 200.

Olympiad Test: Knowing Our Numbers - Question 5

1 million = ______ thousands

Detailed Solution for Olympiad Test: Knowing Our Numbers - Question 5

The correct answer is 1000 because there are 1000 thousands in one million.

Olympiad Test: Knowing Our Numbers - Question 6

In the International system of numeration, one crore is equal to ______ million.

Detailed Solution for Olympiad Test: Knowing Our Numbers - Question 6

In the International system of numeration, one crore is equal to ten million. This is because one crore is equal to ten million in the Indian numbering system, which is used in countries like India, Pakistan, and Bangladesh. In this system, one crore is equivalent to ten million, so the correct answer is 10.

Olympiad Test: Knowing Our Numbers - Question 7

Find the smallest number among the following numbers. 1411, 14504, 2431, 10001, 9900

Detailed Solution for Olympiad Test: Knowing Our Numbers - Question 7

The given question asks to find the smallest number among the given numbers. The numbers are 1411, 14504, 2431, 10001, and 9900. The smallest number among these numbers is 1411.

Olympiad Test: Knowing Our Numbers - Question 8

The biggest 4 digit number formed by using each of the digits 5,7,8,9, without repetition is

Detailed Solution for Olympiad Test: Knowing Our Numbers - Question 8

The question asks for the biggest 4-digit number that can be formed using the digits 5, 7, 8, and 9 without repetition. The given answer, 9875, is indeed the largest possible number that can be formed using these digits without repetition.

Olympiad Test: Knowing Our Numbers - Question 9

LXIX =

Detailed Solution for Olympiad Test: Knowing Our Numbers - Question 9

The Roman numeral "LXIX" represents the number 69. In Roman numerals, "L" stands for 50, "X" stands for 10, and "IX" stands for 9. Adding these values together gives us 50 + 10 + 9 = 69.

Olympiad Test: Knowing Our Numbers - Question 10

Smallest 5-digit number exceeds the largest 4-digit number by _______ .

Detailed Solution for Olympiad Test: Knowing Our Numbers - Question 10

The smallest 5-digit number is 10000, and the largest 4-digit number is 9999. When we subtract the largest 4-digit number from the smallest 5-digit number, we get 1.

Olympiad Test: Knowing Our Numbers - Question 11

The number 235,006 can be written in words in the international system of numeration as

Detailed Solution for Olympiad Test: Knowing Our Numbers - Question 11

The correct answer is "Two hundred thirty-five thousand six" because it accurately represents the number 235,006 in words according to the international system of numeration. The number 235,006 is composed of 200,000 (two hundred thousand), 30,000 (thirty thousand), and 6 (six). In this system, there are no lakh units, so the options with "lakh" and "thousand" combined are incorrect.

Olympiad Test: Knowing Our Numbers - Question 12

Simplify: 5 × (14 - 20).

Detailed Solution for Olympiad Test: Knowing Our Numbers - Question 12

The expression 5 times the quantity of 14 minus 20 simplifies to 5 times -6, which equals -30.

Olympiad Test: Knowing Our Numbers - Question 13

Rita has a ribbon of length 2070 mm. Sita has a ribbon whose length is 1232 mm shorter than Rita's ribbon. What is the approximate length of Sita's ribbon when rounded to the nearest hundred (in millimeters)?

Detailed Solution for Olympiad Test: Knowing Our Numbers - Question 13

To find the approximate length of Sita's ribbon, we need to subtract 1232 mm from Rita's ribbon length and then round the result to the nearest hundred.
Rita's ribbon length = 2070 mm Sita's ribbon length = Rita's ribbon length - 1232 mm
Sita's ribbon length ≈ 2070 mm - 1232 mm Sita's ribbon length ≈ 838 mm
When rounded to the nearest hundred, Sita's ribbon length is approximately 800 mm.

Olympiad Test: Knowing Our Numbers - Question 14

The tickets sold for the semi-final IPL match were 9872, whereas 10050 tickets were sold during the finals. How many more tickets, estimated to the nearest tens, were sold during the finals?

Detailed Solution for Olympiad Test: Knowing Our Numbers - Question 14

During the finals, 10050 tickets were sold, whereas for the semi-final match, only 9872 tickets were sold. To find out how many more tickets were sold during the finals, we subtract the number of tickets sold for the semi-finals from the number of tickets sold during the finals. Therefore, 10050 - 9872 = 178. Since we need to estimate to the nearest tens, the answer would be 180.

Olympiad Test: Knowing Our Numbers - Question 15

The sum of 267 + 132 to the nearest ten is _______.

Detailed Solution for Olympiad Test: Knowing Our Numbers - Question 15

To find the sum of 267 + 132 to the nearest ten, we first add the two numbers which gives us 399. Since 399 is closer to 400 than to any other multiple of ten, the sum rounded to the nearest ten is 400.

Olympiad Test: Knowing Our Numbers - Question 16

2 × 10000 + 6 × 1000 = ?

Detailed Solution for Olympiad Test: Knowing Our Numbers - Question 16

According to this rule, multiplication and division are performed before addition and subtraction. This ensures that calculations are done in a consistent and logical order.

In the expression 2×10000+6×10002 \times 10000 + 6 \times 10002×10000+6×1000:

1. Multiplication comes first:

• 2×10000=200002 \times 10000 = 200002×10000=20000
• 6×1000=60006 \times 1000 = 60006×1000=6000

• Add the two results: 20000+6000=2600020000 + 6000 = 2600020000+6000=26000
Olympiad Test: Knowing Our Numbers - Question 17

Estimated the value of the product of 108 and 12.

Detailed Solution for Olympiad Test: Knowing Our Numbers - Question 17

To estimate the product of 108 and 12, you can use approximate rounding:

1. Round 108 to 100.
2. Multiply 100 by 12: 100×12=1200

Given the options and considering that 1200 is closest to

1500

Olympiad Test: Knowing Our Numbers - Question 18

Roman Numeral of 400 is

Detailed Solution for Olympiad Test: Knowing Our Numbers - Question 18

The Roman numeral for 400 is CD. In Roman numerals, C represents 100 and D represents 500. When a smaller numeral (C) is placed before a larger numeral (D), it indicates subtraction. So, CD represents 500-100=400.

Olympiad Test: Knowing Our Numbers - Question 19

15 × 1000 + 7 × _______ + 6 × 10 = 15760

Detailed Solution for Olympiad Test: Knowing Our Numbers - Question 19

To solve the equation, we can substitute the given values into the equation and solve for the missing value.
By substituting 100 for the missing value,
we get 15 x 1000 + 7 x 100 + 6 x 10 = 15760.
Simplifying the equation, we get 15000 + 700 + 60 = 15760.
Combining like terms, we get 15760 = 15760,
which is a true statement.
Therefore, the missing value must be 100.

Olympiad Test: Knowing Our Numbers - Question 20

Sum 3537 + 3884 to nearest tens is

Detailed Solution for Olympiad Test: Knowing Our Numbers - Question 20

To find the sum of 3537 and 3884 to the nearest tens, we round each number to the nearest tens and then add them together.
Rounding 3537 to the nearest tens gives us 3540, and rounding 3884 to the nearest tens gives us 3880.
Adding these rounded numbers together gives us 7420, which is the nearest tens value for the sum of 3537 + 3884.

## Mathematics (Maths) Class 6

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