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 successor of 1 million is

1

(a)

2 million

(b)

1000001

(c)

100001

(d)

10001

The predecessor of 100 is

1

(a)

101

(b)

100

(c)

99

(d)

None of these

125 + (68 + 32) = (125 + ______ ) + 32.

1

(a)

68

The smallest 6-digit natural number ending in 5 is ____________.

1

(a)

100005

24 x 25 = 24 x \(\frac{\Box}{4}\) = 600.

1

(a)

100

Zero is the smallest whole number.

1

(a) False

(b) True

All whole numbers are natural numbers.

1

(a) True

(b) False

The natural number 1 has no predecessor.

1

(a) False

(b) True

The whole number 13 lies between 11 and 12.

1

(a) True

(b) False

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

2

(a)

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

2

(a)

Find using the number line 3 x 3.

2

(a)

Write the predecessor of the following:
(a) 96
(b) 9998.

3

(a)

Find 5 x 4 on the number line.

3

(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 19 odd numbers.
(b) First 21 odd numbers.

3

(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)