Students can practice TS 6th Class Maths Solutions Chapter 1 Knowing Our Numbers Ex 1.2 to get the best methods of solving problems.
TS 6th Class Maths Solutions Chapter 1 Knowing Our Numbers Exercise 1.2
Question 1.
Round off the following numbers to the nearest tens.
(i) 89
Answer:
89 is nearer to 90 than 80. So it is rounded off to 90
(ii) 415
Answer:
415 is at equal distance from 410 and 420 but by convention it is rounded off to 420.
(iii) 3951
Answer:
3951 is nearer to 3950 than 3960. So it is rounded off to 3950.
(iv) 4409
Answer:
4409 is nearer to 4410 than 4400. So it is rounded off to 4410.
Question 2.
Round off the following numbers to the nearest hundreds.
(i) 695
Answer:
695 is nearer to 700 than 600. So it is rounded off to 700.
(ii) 36152
Answer:
36152 is nearer to 36200 than 36100. So it is rounded off to 36200.
(iii) 13648
Answer:
13648 is nearer to 13600 than 13700. So it is rounded off to 13600.
(iv) 93618
Answer:
93618 is nearer to 93600 than 93700. So it is rounded off to 93600.
Question 3.
Round off the following numbers to the nearest thousands.
(i) 03415
Answer:
3415 is nearer to 3000 than 4000. So it is rounded off to 3000.
(ii) 70124
Answer:
70124 is nearer to 70000 than 71000. So it is rounded off to 70000.
(iii) 8765
Answer:
8765 is nearer to 9000 than 8000. So it is rounded off to 9000.
(iv)4001
Answer:
4001 is nearer to 4000 than 5000. So it is rounded off to 4000.
Question 4.
Write the numbers in short form.
(i) 3000 + 400 + 7
Answer:
3000 + 400 + 7 = 3407
(ii) 10000 + 2000 + 300 + 50 + 1
Answer:
10000 + 2000 + 300 + 50 + 1 = 12351
(iii) 30000 + 500 + 20 + 5
Answer:
30000 + 500 + 20 + 5 = 30525
(iv) 90000 + 9000 + 900 + 90 + 9
Answer:
90000 + 9000 + 900 + 90 + 9 = 99999
Question 5.
Write the expanded form of the numbers.
(i) 4348
Answer:
4348 = (4 × 1000) + (3 × 100) + (4 × 10) + (8 × 1)
= 4000 + 300 + 40 + 8
(ii) 30214
Answer:
30214 = (3 × 10000) + (2 × 100) + (1 × 10) + (4 × 1)
= 30000 + 200 + 10 + 4
(iii) 22222
Answer:
22222 = (2 × 10000) + (2 × 1000) + (2 × 100) + (2 × 10) + (2 × 1)
= 20000 + 2000 + 200 + 20 + 2
(iv) 75025
Answer:
75025 = (7 × 10000) + (5 × 1000) + (2 × 10) + (5 × 1)
= 70000 + 5000 + 20 + 5