NCERT Class 6 Math Exercise 1.3 Solution of Chapter 1 Knowing Our Numbers with explanation. Here we provide Class 6 Maths all Chapters in Hindi for cbse, HBSE, Mp Board, UP Board and some other boards.
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NCERT Class 6 Maths Chapter 1 Knowing our Numbers Exercise 1.3 Solution in english Medium.
Class 6 Maths Chapter 1 Exercise 1.3 Solution
Q.1. Estimate each of the following using general rule:
A. 730 + 998
Ans. 700 + 1000
= 1700
B. 796 – 314
Ans. 800 – 300
= 500
C. 12,904 + 2,888
Ans. 13,000 + 3000
= 16,000
D. 28,292 – 21496
Ans. 28000 – 21000
= 7,000
Q.2. Give a rough estimate ( by rounding off to nearest hundreds ) and also a closer estimate ( by rounding off to nearest tens ) :
A. 439 + 334 + 4,317
Ans. Estimation by rounding of to nearest
Hundreds:-
= 400 + 300 +4300
= 5,000
Estimation by rounding of to nearest
tens :-
= 440 + 330 + 4320
= 5,090
B. 1,08,734 – 47,599
Ans. Estimation by rounding of to nearest
Hundreds:-
= 1,08,700 – 47,600
= 61,100
Estimation by rounding of to nearest
tens :-
= 1,08,730 – 47,600
= 61,130
C. 8,325 – 491
Ans. Estimation by rounding of to nearest
Hundreds:-
= 8300 – 500
= 7,800
Estimation by rounding of to nearest
tens :-
= 8,330 – 490
= 7,840
D. 4,89,348 – 48,365
Estimation by rounding of to nearest
Hundreds:-
= 4,89,300 – 48,400
= 4,40,900
Estimation by rounding of to nearest
tens :-
= 4,89,350 – 48,370
= 4,40,980
Q.3. Estimate the following products using general rule :
A. 578 x 161
Ans. = 600 x 200
= 1,20,000
B. 5281 x 3491
Ans. = 5,000 x 3000
= 1,50,00,000
C. 1291 x 592
Ans. = 1000 x 600
= 6,00,000
D. 9250 x 29
Ans. = 9000 x 30
= 2,70,000