A whole number is added to 25 and the same number is subtracted from 25. The sum of the resulting numbers is

1

(a)

0

(b)

25

(c)

50

(d)

75

The whole number which has no predecessor is

1

(a)

1

(b)

0

(c)

2

(d)

3

77 + 23 = 23 + 77 is an example of

1

(a)

closure property

(b)

associative property

(c)

commutative property

(d)

distributive property

The greatest number which always divides the product of the predecessor and successor of an odd natural number other than 1, is

1

(a)

6

(b)

4

(c)

16

(d)

32

____________ is the successor of the largest 3-digit number.

1

(a)

1000

Division of whole number by __________ is not defined.

1

(a)

0

28 x 25 = 28 x \(\frac{\Box}{4}\) = 700.

1

(a)

100

786 x 3 + 786 x 7 = ________.

1

(a)

7860

400 is the predecessor of 399.

1

(a) True

(b) False

All natural numbers are whole numbers.

1

(a) False

(b) True

Write the predecessor and successor of the following number 139.

2

(a)

Find the value of the following on the number line 3 + 6.

2

(a)

Is there any natural number that has no predecessor?

2

(a)

Are all natural numbers also whole numbers?

2

(a)

Find the sum, using the number line 3 + 5.

2

(a)

Find the sum, using the number line 1 + 6.

2

(a)

Find using the number line 2 x 6.

3

(a)

Find using the number line 3 x 3.

3

(a)

Find the sum of 5 and 7 on the number line.

3

(a)

Write the predecessor of the sum of 645, 287 and 368.

3

(a)

If the product of two whole numbers is zero, can we say that one or both of them will be zero? Justify through examples.

3

(a)

Determine the sum of the four numbers as given below: 
(a) Successor of 32
(b) Predecessor of 49
(c) Predecessor of the predecessor of 56
(d) Successor of the successor of 67.

3

(a)

Find the difference between the smallest number of 7-digit and the largest number of 4-digit.

5

(a)

Study the following patterns.
                   1 = 12
             1 + 3 = 22
       1 + 3 + 5 = 32
 1 + 3 + 5 + 7 = 42
Hence, find the sum of
(a) first 12 odd numbers
(b) first 50 odd numbers.

5

(a)