Introduction to Numbers

Q.

The greatest negative integer is ____ and the smallest positive integer is _____.

1. +1 and -1

2. -1 and +1

3. -1 and -1

4. +1 and +1

Q.

Whole numbers consists of all the natural numbers and 0.

1. True

2. False

Q.

Define whole numbers

Q. Which of the following represents associative property?

1. 25 + 36 = 36 + 25
2. 30 × (50 + 6) = (30 × 50) + (30 × 6)
3. None of the above
4. 34 + (66 + 40) = (34 + 66) + 40

Q.

Define whole numbers and give some examples.

Q. List the prime numbers from 25 to 100 and say how many they are.

Q. Which of the two rational numbers is greater in each of the following pairs?

(i) $\frac{5}{9}\mathrm{or}\frac{-3}{-8}$
(ii) $\frac{4}{-3}\mathrm{or}\frac{-8}{7}$
(iii) $\frac{-12}{5}\mathrm{or}-3$
(iv) $\frac{7}{-9}\mathrm{or}\frac{-5}{8}$
(v) $\frac{4}{-5}\mathrm{or}\frac{-7}{8}$
(vi) $\frac{9}{-13}\mathrm{or}\frac{7}{-12}$

Q.

Whole numbers are not closed under _________ and _________.

1. Addition and Subtraction

2. Division and Addition

3. Addition and Multiplication

4. Subtraction and Division

Q. Simplify
$1800÷\left[10\left\{\begin{array}{c}(12-6)+(24-12)\end{array}\right\}\right]$

Q. Which of the following represents associative property?

1. 25 + 36 = 36 + 25
2. 30 × (50 + 6) = (30 × 50) + (30 × 6)
3. 34 + (66 + 40) = (34 + 66) + 40
4. None of the above

Q.

One day Ted woke up to find himself in the world of numbers. He observed that all of them were counting numbers and the smallest one there was $1$. Ted must be in the world of:

1. Prime numbers

2. Natural numbers

3. Whole numbers

4. Even numbers

Q.

Express the following numbers in Roman number system.

(a) 46

(b) 564

(c) 1, 257

Q.

Temperatures 26${}^{\circ }$C above 0${}^{\circ }$C and 13${}^{\circ }$C below 0${}^{\circ }$C can be represented as

1. +26${}^{\circ }$C and -13${}^{\circ }$C

2. -26${}^{\circ }$C and +13${}^{\circ }$C

3. -26${}^{\circ }$C and -13${}^{\circ }$C

4. +26${}^{\circ }$C and +13${}^{\circ }$C

Q.

In the list of counting numbers, $1$ is the smallest number.

1. True

2. False

Q. Find the missing number. 4/44= ?/77

1. 13
2. 1
3. 7
4. 11

Q. A man travels 3/8 of his journey by train, 3/5 of his journey by bus and walks the rest of the distance. If he walks 2km, how much distance did he travel by bus

Q.

Which is the smallest whole number?

1. $3$
2. $1$
3. $2$

4. $0$

Q.

What is integer

Q.

is 0 is an integer?

Q.

For the following statement, write true (T) or false (F). If the statement is false, correct the statement.

(c) Smallest negative number is -1.

1. True
2. False

Q. Number of integers between -5 and 2 is.

1. 4
2. 7
3. 5
4. 6

Q.

Whole numbers consists of all the natural numbers and 0.

1. True

2. False

Q. 1 kilometre is equal to 1000 metres.

1. True
2. False

Q.

The number system which starts with a predecessor of 1 are known as _____.

1. Integers

2. Prime Numbers

3. Natural Numbers

4. Whole numbers

Q.

How many numbers from the given set are natural numbers?

12, -34, 0, 900000

1. 1
2. 2
3. 4
4. 3

Q. Which of the following integer does not lie between -8 and +6 ?

1. +3
2. +7
3. -7
4. -5

Q. Which of the following numbers is not a whole number?

1. $0$
2. $1$
3. $\frac{1}{2}$
4. $2$

Q. Choose the greatest number from the following:
1.37, 1.47, 1.48, 1.27

1. 1.37
2. 1.47
3. 1.48
4. 1.27

Q. Kelly, in her crafts class, folds a piece of paper and cuts it as shown below.


Upon unfolding the paper, what shape will she find?

1. 
2. 
3. 
4. 

Q.

Mention the numerals used in base-2 system.