ML Aggarwal Whole Number Exe-2.1 Class 6 ICSE Maths Solutions

Question 3. Write the predecessor of each of the following numbers:

(i) 500
(ii) 38794
(iii) 54789011

Answer :

(i) 500 = 499

(ii) 38794 = 38793

(iii) 54789011 = 54789010

Question 4. Write the whole number (in each of the following) whose successor is :

(i) 50795
(ii) 720300
(iii) 8300000

Answer :

(i) 50795 – 50794

(ii) 720300 – 720299

(iii) 8300000 – 8299999

Question 5. Write the whole number in each of the following) whose predecessor is:

(i) 5347
(ii) 72399
(iii) 3012999

Answer :

(i) 5347 – 5348

(ii) 72399 – 72400

(iii) 3012999 – 3013000

Question 6. Write next three consecutive whole numbers of the following numbers:

(i) 79
(ii) 598
(iii) 35669

Answer :

(i) 79 = 80, 81, 82

(ii) 598 = 599, 600, 601

(iii) 35669 = 35670, 35671, 35672

Question 7. Write three consecutive whole numbers occuring just before 320001.

Answer :

319998, 319999, 320000

Question 8.

(i) How many whole numbers are there between 38 and 68?
(ii) How many whole numbers are there between 99 and 300?

Answer :

(i) There are 68 – 38 = 30 whole numbers.

(ii) There are (300 – 99 = 201) whole numbers.

Question 9. Write all whole numbers between 100 and 200 which do not change if the digits are written in reverse order.

Answer :

101, 111, 121, 131, 141, 151, 161, 171, 181, 191

Question 10. How many 2-digit whole numbers are there between 5 and 92?

Answer :

92 – 10 = 82

Question 11. How many 3-digit whole numbers are there between 72 and 407?

Answer :

407 – 100 = 307