S.chand class 6 Mathematics Chapter 1 Exercise 1F

 

EXERCISE 1 F


QUESTION 1

Estimate first, then write the sum or difference. Find the sum to check your work.

(i) 51 + 47

Sol :

 

(ii) 528 + 62

Sol :

 

(iii) 2314 + 372

Sol :

 

(iv) 1521 + 6325

Sol :

 

(v) 43278 + 2902

Sol :

 

(vi) 7893 - 4164

Sol :

 

(vii) 47348 - 2267

Sol :

 

(viii) 2597 - 390

Sol :

 

(ix) 9001 - 557

Sol :

 

(x) 65662 - 4465

Sol :

 


QUESTION 2

Choose the correct answer for each of these. Rounding off will help you

(i) 167 + 2051 + 1356 = (1835 , 3015 , 5085)

Sol :

 

(ii) 6995 - 3068 = (3927 , 1927 , 2927)

Sol :

 

(iii) 2008 × 3 = (5048 , 4048 , 6024)

Sol :

 

(iv) 5898 ÷ 3 = (1966 , 1066 , 2966)

Sol :

 


 

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