Try these : (Class VI ( 6th) Mathematics Chapter 1. Knowing our Numbers:Page 2
Q. Can you instantly find the greatest and the smallest numbers in each row?
1.  382, 4972, 18, 59785, 750  Ans. 59785 is the greatest and 18 is the smallest. 
2.  1473, 89423, 100, 5000, 310.  Ans. 89423 is the greatest and 100 is the smallest. 
3.  1834, 75284, 111, 2333, 450  Ans.75284 is the greatest and 111 is the smallest. 
4.  2853, 7691, 9999, 12002, 124  Ans. 12002 is the greatest and 124 is the smallest. 
Try these :(Class VI ( 6th) Mathematics Chapter 1. Knowing our Numbers:Page 2
Find the greatest and the smallest numbers.
a  4536, 4892, 4370, 4452.  Ans. 4892 is the greatest and 4370 is the smallest. 
b  15623, 15073, 15189, 15800  Ans. 15800 is the greatest and 15073 is the smallest. 
c  25286, 25245, 25270, 25210.  Ans. 25286 is the greatest and 25210 is the smallest. 
d  6895, 23787, 24569, 24659.  Ans. 24569, 24659 is the greatest and 6895is the smallest. 
Try these :(Class VI ( 6th) Mathematics Chapter 1. Knowing our Numbers:Page 3
1. Use the given digits without repetition and make the greatest and smallest 4digit numbers.
(a) 2, 8, 7, 4
(b) 9, 7, 4, 1
(c) 4, 7, 5, 0
(d) 1, 7, 6, 2
(e) 5, 4, 0, 3
(Hint : 0754 is a 3digit number.)
Answer:
Q. No.  Given Digits  Greatest 4digit numbers  Smallest 4digit numbers 
(a)  2, 8, 7, 4  8742  2478 
(b)  9,7, 4,1  9741  1479 
(c)  4,7,5,0  7540  0457 
(d)  1, 7, 6, 2  7621  1267 
(e)  5, 4, 0, 3  5430  0345 
Q.2 Now make the greatest and the smallest 4digit numbers by using any one digit twice.
(a) 3, 8, 7
(b) 9, 0, 5
(c) 0, 4, 9
(d) 8, 5, 1
(Hint : Think in each case which digit will you use twice.)
Answer:
Q. No.  Given Digits  Greatest 4digit numbers  Smallest 4digit numbers 
(a)  3, 8, 7  8873  3378 
(a)  9, 0, 5  9905  5009 
(a)  0, 4, 9  9940  4009 
(a)  8, 5, 1  8851  1158 
Q.3. Make the greatest and the smallest 4digit numbers using any four different digits with conditions as given.
(a)  Digit 7 is always at ones place 
 
(b)  Digit 4 is always at tens place 
 
(c)  Digit 9 is always at hundred place 
 
(d)  Digit1 is always at thousand place 

Q4. Take two digits, say 2 and 3. Make 4digit numbers using both the digits equal number of times.
Which is the greatest number?
Answer: 3322
Q5.Which is the smallest number?
Answer:2233
Q6. How many different numbers can you make in all?
Answer:3322, 2233, 3232, 2323
Stand in proper order
Q1. Who is the tallest?
Q2. Who is the shortest?
(a) Can you arrange them in the increasing order of their heights?
(b) Can you arrange them in the decreasing order of their heights?
Q1. Who is the tallest?
Answer: Ramhari is the tallest.
Q2. Who is the shortest?
Answer: Dolly is the Shortest.
Q.(a) Can you arrange them in the increasing order of their heights?
Answer (a):Increasing order of heights  Dolly (154 cm), Mohan (158 cm), Shashi (159 cm), Ramhari (160 cm)
Standing in Increasing Order 
(b) Can you arrange them in the decreasing order of their heights?
Answer :Decreasing order of heights  Ramhari (160 cm), Shashi (159 cm), Mohan (158 cm), Dolly (154 cm)
Standing in Decreasing Order 
Which to buy?
Sohan and Rita went to buy an almirah.There were many almirahs availablewith their price tags
(a) Can you arrange their prices in increasing order?
(b) Can you arrange their prices in decreasing order?
Answer(a): Increasing order of priceRs 1788,Rs 1897,Rs 2635,Rs 2854,Rs 3975
Almirahs in Increasing Order of Price 
Answer(b): Decreasing order of priceRs 3975,Rs 2854,Rs 2635,Rs 1897,Rs 1788
Almirahs in Decreasing Order of Price 
Q1. Arrange the following numbers in ascending order :
(a) 847, 9754, 8320, 571
(b) 9801, 25751, 36501, 38802
Answer(a) : 847, 571,8320,9754
Answer(b) : 9801, 25751,36501
Q2. Arrange the following numbers in descending order :
(a) 5000, 7500, 85400, 7861
(b) 1971, 45321, 88715, 92547
Answer(a): 85400, 7500, 5000,7861
Answer(b): 92547, 88715, 45321,1971
Q3. Make ten such examples of ascending/descending order and solve them.
Answer:
Ascending Order
Example1. 847, 9754, 8320, 571
Answer: 571,847,8320,9754
Example2. 9801, 45751, 25751, 2751,
Answer: 2751, 9801,25751, 45751
Example3. 25751, 36501, 38802
Answer: 25751,36501, 38802
Example4. 847, 571,8320,9754
Answer: 571, 847, 8320, 9754
Example5. 5000, 7500, 8540, 7861
Answer: 5000,7500, 7861, 8540
Example6. 85400, 7500, 5000,7861
Answer: 5000,7500, 7861,85400
Example7. 1971, 88715, 92547, 45321
Answer: 1971,45321,88715, 92547
Example8. 92547, 88715, 45321,1971
Answer: 1971,45321,92547, 88715
Example9. 2922, 2145, 2343, 1232
Answer: 1232, 2145,2343, 2922
Example10. 2343,2145,1253,1232
Answer: 1232, 1253, 2145, 2343
Descending Order
Example1. 847, 9754, 8320, 571
Answer: 9754, 8320, 847,571
Example2. 9801, 25751, 20751, 456
Answer: 25751,20751, 847, 571
Example3. 25751, 36501, 38802, 1203
Answer: 38802, 36501, 25751, 1203
Example4. 847, 371, 8320,9754
Answer: 9754, 8320,,847, 371
Example5. 5000, 7500, 85400, 7861
Answer: 85400, 7861,7500,5000
Example6. 85601, 4500, 1000,7861
Answer: 85601, 7861, 4500, 1000
Example7. 1971, 45321, 88715, 92547
Answer: 92547, 88715, 45321,1971
Example8. 12547, 80715, 45321,1501
Answer: 80715,45321,12547,1501
Example9. 90505, 89715, 45321,2022
Answer: 90507,89715,45321,2022
Example10. 1232, 2343, 2145,1253,
Answer: 2343, 2145,1253,1232
Try these :(Class VI ( 6th) Mathematics Chapter 1. Knowing our Numbers:Page 6
Read and expand the numbers wherever there are blanks.
Number.  Number Name  Expansion 
20000  twenty thousand  2 × 10000 
26000  twenty six thousand  2 × 10000 + 6 × 1000 
38400  thirty eight thousand four hundred  3 × 10000 + 8 × 1000 + 4 × 100 
65740  sixty five thousand seven hundred forty  6 × 10000 + 5 × 1000 + 7 × 100 + 4 × 10 
89324  eighty nine thousand three hundred twenty four  8 × 10000 + 9 × 1000 + 3 × 100 + 2 × 10 + 4 × 1 
50000  fifty thousand  5×10000 
41000  forty one thousand  4×10000+1×1000 
47300  forty seven thousand three hundred  4 ×10000+ 7×1000 + 3×100 
57630  fifty seven thousand six hundred thirty  5 × 10000+7×1000 + 6×100 + 3 ×10 
29485  twenty nine thousand four hundred eighty five  2×10000+9×1000+4×100 + 8 ×10+ 5×1 
29085  twenty nine thousand eighty five  2×10000+9×1000+ 8 ×10+ 5×1 
20085  twenty thousand eighty five  2×10000 + 8 ×10+ 5×1 
20005  twenty thousand five  2×10000+ 5×1 
Try these :(Class VI ( 6th) Mathematics Chapter 1. Knowing our Numbers:Page 6
Read and expand the numbers wherever there are blanks.
Number.  Number Name  Expansion 
3,00,000  Three lakh  3 × 1,00,000 
3,50,000  Three lakh fifty thousand  3 × 1,00,000 + 5 × 10,000 
3,53,500  Three lakh fifty three thousand five hundred  3 × 1,00,000 + 5 × 10,000 + 5×100 
4,57,928  Four lakh fifty seven thousand nine hundred twenty eight  4 × 1,00,000 + 5 × 10,000+7× 1 + 9×100+2 ×10+8×1 
4,07,928  Four lakh seven thousand nine hundred twenty eight  4 × 1,00,000 +7× 1,000+ 9×100+2 ×10+8×1 
4,00,829  Four lakh eight hundred twenty nine  4 × 1,00,000 + 8× 100+2×10+9×1 
4,00,029  Four lakh twenty nine  4× 1,00,000 +2×10+9×1 
Try these :(Class VI ( 6th) Mathematics Chapter 1. Knowing our Numbers:Page 8
1. What is 10 – 1 =9
2. What is 100 – 1 =99
3. What is 10,000 – 1 =9,999
4. What is 1,00,000 – 1 =99,999
5. What is 1,00,00,000 – 1 =99,99,999
(Hint : Use the said pattern.)
Try these :(Class VI ( 6th) Mathematics Chapter 1. Knowing our Numbers:Page 8
Q1. Give five examples where the number of things counted would be more than
6digit number.
Answer:
1.The population of chandigarh
2.Numbers of stars in the sky
3.Numbers of cars in IndIa
4.Numbers of trees in IndIa
5.Numbers of mobils in IndIa
Q2. Starting from the greatest 6digit number, write the previous five numbers in
descending order.
Answer: The greatest 6digit number : 999999
The previous five numbers in descending order: 999998, 999997, 999996, 999995, 999994,
Q3. Starting from the smallest 8digit number, write the next five numbers in ascending order and read them.
Answer: the smallest 8digit number : 10000000
The next five numbers in ascending order: 10000001,10000002,10000003,10000004,10000005
Try these :(Class VI ( 6th) Mathematics Chapter 1. Knowing our Numbers:Page 11
Q1. Read these numbers. Write them using placement boxes and then write
their expanded forms.
(i) 475320 (ii) 9847215 (iii) 97645310 (iv) 30458094
(a) Which is the smallest number?
(b) Which is the greatest number?
(c) Arrange these numbers in ascending and descending orders.
Answer(a). 475320 (Four Lakh seventy five Thousand three Hundred twenty ) is the smallest number.
Answer(b). 97645310 (Nine crore seventy six Lakh forty five thousand three hundred ten) is the greatest number.
Answer(c).
1. Ascending orders : (i) 475320 (ii) 9847215 (iv) 30458094 (iii) 97645310
2. Descending orders : (iii) 97645310 (iv) 30458094 (ii) 9847215 (i) 475320
Number  Cr  T.Lakh  Lakh  T.Th  Th  H  T  O  Number Name  Expansion  
(i)  475320      4  7  5  3  2  0  Four Lakh seventy five Thousand three Hundred twenty  4×100000 + 7×10000 + 5×1000+3×100+2×10+0 
(ii)  9847215    9  8  4  7  2  1  5  Ninety eight Lakh fourty seven Thousand two Hundred fifteen  9×1000000+8×100000+4×10000 +7×1000+2×100+1×10+5 
(iii)  97645310  9  7  6  4  5  3  1  0  Nine crore seventy six Lakh forty five thousand three hundred ten  9×10000000+7×1000000+6×100000 +4×10000+5×1000+3×100+1×10+ 0 
(iv)  30458094  3  0  4  5  8  0  9  4  Thirty crore fourty five lakh eighty thousand ninty four  3×10000000+0×1000000+4×100000 +5×10000+8×1000+0×100+9×10+4 
Q2. Read these numbers.
(i) 527864 (ii) 95432 (iii) 18950049 (iv) 70002509
(a) Write these numbers using placement boxes and then using commas in
Indian as well as International System of Numeration..
(b) Arrange these in ascending and descending order.
Q3. Take three more groups of large numbers and do the exercise given above.
Try these :(Class VI ( 6th) Mathematics Chapter 1. Knowing our Numbers:Page 11
Q1. You have the following digits 4, 5, 6, 0, 7 and 8. Using them, make five
numbers each with 6 digits.
(a) Put commas for easy reading.
(b) Arrange them in ascending and descending order.
Q2. Take the digits 4, 5, 6, 7, 8 and 9. Make any three numbers each with 8
digits. Put commas for easy reading.
3. From the digits 3, 0 and 4, make five numbers each with 6 digits. Use commas.
Find the greatest and the smallest numbers.
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