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.

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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 4-digit 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 3-digit number.)

 Q. No. Given Digits Greatest 4-digit numbers Smallest 4-digit 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 4-digit 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.)
 Q. No. Given Digits Greatest 4-digit numbers Smallest 4-digit 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 4-digit numbers using any four different digits with conditions as given.
(a)Digit 7 is always at ones place
 Greatest - 9 8 6 7 Smallest - 1 0 2 7
(b)Digit 4 is always at tens place
 Greatest - 9 8 4 7 Smallest - 1 0 4 2
(c)Digit 9 is always at hundred place
 Greatest - 8 9 12 14 Smallest - 1 9 7 5
(d)Digit1 is always at thousand place
 Greatest - 1 5 6 8 Smallest - 1 0 2 3

Q4. Take two digits, say 2 and 3. Make 4-digit numbers using both the digits equal number of times.
Which is the greatest number?

Q5.Which is the smallest number?

Q6. How many different numbers can you make in all?

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?
Q2. Who 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

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 price-Rs 1788,Rs 1897,Rs 2635,Rs 2854,Rs 3975
 Almirahs in  Increasing Order of Price

Answer(b): Decreasing order of price-Rs 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
Q2. Arrange the following numbers in descending order :
(a) 5000, 7500, 85400, 7861
(b) 1971, 45321, 88715, 92547
Q3. Make ten such examples of ascending/descending order and solve them.
Ascending Order
Example1. 847, 9754, 8320, 571
Example2. 9801, 45751, 25751, 2751,
Example3. 25751, 36501, 38802
Example4. 847, 571,8320,9754
Example5. 5000, 7500, 8540, 7861
Example6. 85400, 7500, 5000,7861
Example7. 1971, 88715, 92547, 45321
Example8. 92547, 88715, 45321,1971
Example9. 2922, 2145, 2343, 1232
Example10. 2343,2145,1253,1232

Descending Order
Example1. 847, 9754, 8320, 571
Example2. 9801, 25751, 20751, 456
Example3. 25751, 36501, 38802, 1203
Example4. 847, 371, 8320,9754
Example5. 5000, 7500, 85400, 7861
Example6. 85601, 4500, 1000,7861
Example7. 1971, 45321, 88715, 92547
Example8. 12547, 80715, 45321,1501
Example9. 90505, 89715, 45321,2022
Example10. 1232, 2343, 2145,1253,

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
6-digit number.
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 6-digit number, write the previous five numbers in
descending order.
Answer: The greatest 6-digit number : 999999
The previous five numbers in descending order: 999998, 999997, 999996, 999995, 999994,
Q3. Starting from the smallest 8-digit number, write the next five numbers in ascending order and read them.
Answer: the smallest 8-digit 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.
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

(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.