S.chand class 6 Mathematics Chapter 1 Exercise 1G

 

EXERCISE 1 F

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QUESTION 1

Answer the following by estimating.

The headline read 'A MILLION VOTED TODAY' Actually 90,018 people voted each hour for 12 hours . Did the newspaper give a sensible account of the number of votes cast in the election .

QUESTION 2

Choose the most suitable estimate from the possible answers given

(i) 4 × 52 = (220, 200, 280)

Sol :

 

(ii) 8 × 31 = (240 , 260 , 270 )

Sol :

 

(iii) 2 × 898 = (1600 , 1500 , 1800)

Sol :

 

(iv) 3 × 88 = (250, 270, 600)

Sol :

 

(v) 4 × 92 = (340, 350, 360)

Sol :

 

(vi) 3 × 296 = (800 , 900 , 700)

Sol :

 

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QUESTION 3

Estimate the product and verify by actual calculation.

(i) 48 × 7

Sol :

 

(ii) 65 × 57

Sol :

 

(iii) 325 × 6

Sol :

 

(iv) 65 × 21

Sol :

 

(v) 58 × 83

Sol :

 

(vi) 434 × 87

Sol :

 

(vii) 702 × 65

Sol :

 

(viii) 815 × 477

Sol :

 

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QUESTION 4

Copy and f‌ill in the boxes.

(i) $\begin{array}{rrr}\boxed{\phantom{8}}\\5\overline{)441}\rightarrow5\overline{)400}\end{array}$

(ii) $\begin{array}{rrr}\boxed{\phantom{8}}\\12\overline{)355}\rightarrow 12\overline{)360}\end{array}$

(iii) $\begin{array}{rrr}\boxed{\phantom{8}}\\46\overline{)487}\rightarrow 50\overline{)500}\end{array}$

(iv) $\begin{array}{rrr}\boxed{\phantom{8}}\\36\overline{)828}\rightarrow 40\overline{)800}\end{array}$

(v) $\begin{array}{rrr}\boxed{\phantom{8}}\\54\overline{)1533}\rightarrow 50\overline{)1500}\end{array}$

(vi) $\begin{array}{rrr}\boxed{\phantom{8}}\\65\overline{)2116}\rightarrow 70\overline{)2100}\end{array}$

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QUESTION 5

Estimate the quotient and verify by actual calculation.

(i) $8\overline{)563}$

Sol :

 

(ii) $7\overline{)714}$

Sol :

 

(iii) $9\overline{)7187}$

Sol :

 

(iv) $4\overline{)2657}$

Sol :

 

(v) $21\overline{)4423}$

Sol :

 

(vi) $3758 \div 97$

Sol :

 

(vii) $5294 \div 128$

Sol :

 

(viii) $7982 \div 789$

Sol :

 

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