Students can practice TS 6th Class Maths Solutions Chapter 1 Knowing Our Numbers Ex 1.1 to get the best methods of solving problems.
TS 6th Class Maths Solutions Chapter 1 Knowing Our Numbers Exercise 1.1
Question 1.
Which is the greatest and the smallest among the following numbers ?
(i) 15432, 15892, 15370, 15524
Answer:
All the four numbers are of 5 digits.
The digits in ten thousands place in all the given numbers are same.
The digits in thousands place are also same.
So we move to hundreds place to compare them.
The digits in hundreds place are 4, 8, 3 and 5 respectively.
∴ 3 < 4 < 5 < 8
∴ The greatest number is 15892
The smallest number is 15370
(ii) 25073, 25289, 25800, 25623
Answer:
All the four numbers are of 5 digits. The digits in ten thousands place in all the given numbers are same. The digits in thousands place are also same. So we move to hundreds place to compare them.
The digits in hundreds place are 0, 2, 8, 6 respectively.
∴ 0 < 2 < 6 < 8
The greatest number is 25800
The smallest number is 25073
(iii) 44687, 44645, 44670, 44602
Answer:
All the four numbers are of 5 digits.
The digits in ten thousands place, thousands place and hundreds place are same in all the numbers.
So we move to tens place to compare them.
The digits in tens place are 8, 4, 7, 0 respectively.
∴ 0 < 4 < 7 < 8
∴ The greatest number is 44687.
The smallest number is 44602.
(iv) 75671, 75635, 75641, 75610
Answer:
All the four numbers are of 5 digits. The digits in ten thousands place, thousands place and hundreds place are same in all the numbers. So we move to tens place to compare them. The digits in tens place are 7, 3, 4, 1 respectively.
∴ 1 < 3 < 4 < 7
∴ The greatest number is 75671 The smallest number is 75610
v) 34895, 34891, 34899, 34893
Sol. All the four numbers are of 5 digits. The digits in ten thousands place, thousands place, hundreds place and tens place are same in all the numbers. So we move to units place to compare them.
The digits in units place are 5, 1, 9, 3 respectively.
∴ 1 < 3 < 5 < 9
∴ The greatest number is 34899
The smallest number is 34891
Question 2.
Write the numbers in ascending (in-creasing) order.
(i) 375, 1475, 15951, 4713
Answer:
We can say that 15951 is the greatest number and 375 is the smallest number by counting the digits in the numbers. Regarding 1475 and 4713 it is clear that 1475 < 4713
∴ 375 < 1475 < 4713 < 15951
The ascending order is 375, 1475, 4713, 15951
(ii) 9347, 19035, 22570, 12300
Answer:
The number with four digits (i.e.,) 9347 is the smallest number because the other numbers are of five digits.
In 19035, 22570, 12300 numbers, the greatest number is 22570.
Again 12300 < 19035
∴ 9347 < 12300 < 19035 < 22570
The ascending order is 9347, 12300, 19035, 22570
Question 3.
Write the numbers in descending (decreasing) order.
(i) 1876, 89715, 45321, 89254
Answer:
1876 is the smallest number because it has four digits while the other numbers are of five digits.
The other numbers are 89715, 45321, 89254.
45321 < 89254 < 89715 (∵ 2 < 7) ∴ The descending order is 89715, 89254, 45321, 1876. (∵ 89715 > 89254 > 45321 > 1876)
(ii) 3000, 8700, 3900, 18500
Answer:
18500 is the greatest number because it has five digits while the other numbers are of four digits.
The other numbers are 3000,8700,3900
3000 < 3900 < 8700 ∴ The descending order is 18500, 8700, 3900, 3000. (∵ 18500 > 8700 > 3900 > 3000)
Question 4.
Compare the numbers by placing appropriate symbol (< or >) in the space given.
(i) 3854 ………………… 15200
Answer:
3854 < 15200 (ii) 4895 …………………. 4864 Answer: 4895 > 4864
(iii) 99454 ………………….. 99445
Answer:
99454 > 99445
(iv) 14500 ………………….. 14499
Answer:
14500 > 14499
Question 5.
Write the numbers in words :
(i) 72642
Answer:
72,642 = Seventy two thousand six hundred forty two
(ii) 55345
Answer:
55,345 = Fifty five thousand three hundred forty five
(iii) 66600
Answer:
66,600 = Sixty six thousand six hundred
(iv) 30301
Answer:
30,301 = Thirty thousand three hundred one
Question 6.
Write the numbers in figures:
(i) Forty thousand two hundred seventy.
Answer:
40,270
(ii) Fourteen thousand sixty four.
Answer:
14,064
(iii) Nine thousand seven hundred.
Answer:
9,700
(iv) Sixty thousand.
Answer:
60,000
Question 7.
Form four digit numbers with the digits 4, 0, 3, 7 and find which is the greatest and the smallest among them ?
Answer:
The digits given are 4, 0, 3, 7.
The four digit numbers formed with the digits are
4037, 4073, 4370, 4307, 4730, 4703
3047, 3074, 3470, 3407, 3704, 3740
7034, 7043, 7304, 7340, 7403, 7430
The greatest number is 7430
The smallest number is 3047
Question 8.
Write the following numbers.
(i) the smallest four digit number
Answer:
1000
(ii) the greatest four digit number
Answer:
9999
(iii) the smallest five digit number
Answer:
10000
(iv) the greatest five digit number
Answer:
99999