## ML Aggarwal Class 6 Solutions for ICSE Maths Chapter 1 Knowing Our Numbers Check Your Progress

Question 1.

Write the numeral for each of the following numbers and insert commas correctly:

(i) Six crore nine lakh forty seven.

(ii) One hundred four million seven hundred twenty two thousand three hundred ninety four.

Solution:

Question 2.

Insert commas suitably and write the numebr 30189301 in words in Indian and International system of numeration.

Solution:

Question 3.

Find the difference between the place value and the face value of the digit 6 in the number 72601.

Solution:

Question 4.

Write all possible two-digit number using the digits 4 and 0. repetition of digits is allowed.

Solution:

Question 5.

Write all possible natural numbers using the digits 7, 0, 6. Repetition of digits is not allowed.

Solution:

Question 6.

Arrange the following numbers in ascending order:

3706, 58019, 3760, 59801, 560023

Solution:

Question 7.

Write the greatest six-digit number using four different digits.

Solution:

Question 8.

Write the smallest eight-digit number using four different digits.

Solution:

Question 9.

Find the difference between the greatest and the smallest 4-digit numbers formed by the digits 0, 3, 6, 9.

Solution:

Question 10.

Find the sum of the four-digit greatest number and the five-digit smallest number, each number having three different digits.

Solution:

Question 11.

Write the greatest and the smallest four-digit numbers using four different digits with the conditions as given:

(i) Digit 3 always at hundred’s place.

(ii) Digit 0 always at ten’s place.

Solution:

Question 12.

A mobile number consists of ten digits. First four digits are 9, 9, 7 and 9. Make the smallest mobile number by using only one digit twice from the digits 8, 3, 5, 0, 6.

Solution:

Question 13.

Two stitch a uniform, 1 m 75 cm cloth is needed. Out of 153 m cloth, how many uniforms can be stitched and how much cloth will remain?

Solution:

Question 14.

Medicine is packed in boxes, each weighing 4 kg 500 g. How many such boxes can be loaded in a van which cannot carry beyond 800 kg?

Solution:

Question 15.

Estimate : 6554 – 677 by estimating the numbers to their nearest

(i) thousands

(ii) hundreds

(iii) greatest places

Also point out the most reasonable estimate.

Solution: