Whole Numbers
Estimation
Unit Conversion
100

Pick out the whole number from the following:

-10, 8.09, 99, 3/7

99

100

Estimate by rounding off each number to the nearest tens: 11 x 29


10 x 30 = 300

100

12 litres = ___________ ml?

12000 ml (12 x 1000)

200

The difference between the successor of a number and the number itself is
(a) 0
(b) – 1
(c) 1
(d) none of these.

(b) 1

200

Estimate the value of 7984 + 456 to the nearest 100.

(a) 8000

(b) 8200

(c) 8400

(d) 8500

(d) 8500

200

Among deci, hecto and milli, the smallest is milli. True or False? 

True

300

Which of the following statement is true?
(а) All natural numbers are also whole numbers
(b) All whole numbers are also natural numbers
(c) There is no smallest whole number
(d) The greatest whole number is 100

(а) All natural numbers are also whole numbers

300

Ram earns Rs1003 per month. Estimate the total amount he will have in a year? 

(a) 10000

(b) 11000

(c) 12000

(d) 1000

(c) 12000

300

Which of the two measurements is greater: 

45 kg or 4500g?

45 kg (45kg = 45000g)

400

The difference between the successor and the predecessor of a number is
(a) 1
(b) - 2
(c) -1
(d) 2

(d) 2

400

Estimate by rounding off each number to its nearest hundreds: 623 divided by 199

600 divided by 200 = 3

400

How many seconds are there in 1 hour?

3600 seconds (60 x 60)

500

Which of the following statement is true?
(a) The whole number 0 has no predecessor
(b) There are 10 whole numbers between 11 to 21
(c) The successor of a two digit number is always a two digit number
(d) The predecessor of a two digit number is never a single digit number

(a) The whole number 0 has no predecessor

500

Which of the following is the greatest number which, when rounded to nearest 100s and 1000s,  gives us 1000?

(a) 1009

(b) 949

(c) 951

(d) 1049

(d) 1049

500

If a kurta requires 2m 25cm of cloth, how much of cloth will be required for 21 such kurtas?

47m 25cm (225 cm x 21 = 4725 cm. 

                   4725/100 = 47.25m )