Page 97 - Ganit Kaushal

28. Sarita took a flight from Delhi to Lucknow covering a distance of 863 kilometres, and then from
Lucknow to Kolkata covering 464 kilometres. Estimate the total distance Sarita travelled to reach
Kolkata from Delhi by rounding off to the nearest hundreds.

29. Estimate (guess) within 30 seconds. Check your estimate (guess) with your friends.
(i) Number of words in your maths textbook (NCERT)

(a) more than 5000 (b) less than 5000
(ii) Number of students in your school who travel by bus to school. (NCERT)
(a) more than 200 (b) less than 200

Assertion Reason Type Questions
A statement of assertion (A) is followed by a statement of reason (R). Choose the correct option out of the

choices given below for each question:
(a) Both A and R are true and R is the correct explanation of A.

(b) Both A and R are true but R is not the correct explanation of A.
(c) A is true but R is false.
(d) A is false but R is true.

1. Assertion (A): The maximum number of supercells in a table cannot be more than half the number
of cells in that table.
Reason (R): Supercells can only occur alternately in a table.

2. Assertion (A): 450 is the smallest number among 1834, 75284, 2333, and 450.
Reason (R): The number having fewer digits is smaller.

3. Assertion (A): There are 15 whole numbers between 0 and 15.
Reason (R): The natural numbers, along with zero, form a collection of whole numbers.
4. Assertion (A): The place value of six in the numbers 136 and 623 is different.

Reason (R): The place value of a non-zero digit depends upon the place it occupies in a given number.
5. Assertion (A): 29,439 > 17,230

Reason (R): The place value of 2 in the number 29,439 = 20,000, and the place value of 1 in the
number 17,230 is 1000.
6. Assertion (A): Both the face value and the place value of 1 in 631 is 1.
Reason (R): The place value of a digit in a number is the digit itself.

7. Assertion (A): 4560 < 1357
Reason (R): Given two numbers with the same number of digits, the number having the bigger digit
at the leftmost place is greater.

8. Assertion (A): The largest five-digit number is 99,999.
Reason (R): Ten million is equal to 1 lakh.

9. Assertion (A): 8512 rounded off to the nearest hundreds is 8500.
Reason (R): The face value of 5 in the number 8500 is 5.

Number Play 95