S.chand class 6 Mathematics Chapter 6 Exercise 6B

 Exercise 6B

Question 1

1. Write the following amounts in rupees using decimals.

(i) $8 \mathrm{P}$

(ii) $19 \mathrm{P}$

(iii) $75 \mathrm{P}$

(iv) $10 \mathrm{P}$

(v) 7 rupees 43 paise

(vi) 28 rupees 6 paise

(vii) 509 rupees ninety-five paise

(viii) 127 rupees 80 paise

2. Express as centimetres using decimals.

(i) $6 \mathrm{~mm}$

(ii) $9 \mathrm{~mm}$

(iii) $42 \mathrm{~mm}$

(iv) $375 \mathrm{~mm}$

3. Express as metres using decimals.

(i) $7 \mathrm{~cm}$

(ii) $18 \mathrm{~cm}$

(iii) $195 \mathrm{~cm}$

(iv) $1328 \mathrm{~cm}$

4. Express as kilometres using decimals.

(i) $8 \mathrm{~m}$

(ii) $39 \mathrm{~m}$

(iii) $457 \mathrm{~m}$

(iv) $3824 \mathrm{~m}$

5. Using decimal notation express.

(i) $6 \mathrm{~m} \mathrm{} 15 \mathrm{~cm}$ in metres

(ii) $65 \mathrm{~m} \mathrm{} 9 \mathrm{~cm}$ in metres

(iii) $12 \mathrm{~km} 200 \mathrm{~m}$ in kilometres

(iv) $105 \mathrm{~km} 25 \mathrm{~m}$ in kilometres

(v) $829 \mathrm{~cm}$ in kilometres

6. Express as grams using decimals.

(i) $18 \mathrm{mg}$

(ii) $125 \mathrm{mg}$

(iii) $6 \mathrm{mg}$

(iv) $18 \mathrm{~g} \mathrm{} 12 \mathrm{mg}$

(v) $9 \mathrm{~g} 77 \mathrm{mg}$

7. Express as kilograms using decimals. $1^{0^{\circ}}$

(i) $690 \mathrm{~g}$

(ii) $97 \mathrm{~g}$

(iii) $2790 \mathrm{~g}$

(iv) $1700 \mathrm{~g}$

(v) $4 \mathrm{~g}$

(vi) $4 \mathrm{~kg} 25 \mathrm{~g}$

(vii) $23 \mathrm{~kg} \mathrm{} 179 \mathrm{~g}$

(viii) $110 \mathrm{~kg} 8 \mathrm{~g}$

8. Express using decimals.

(i) $5 \mathrm{~mL}$ as litres

(ii) $732 \mathrm{~mL}$ as litres

(iii) $19 \mathrm{~L}$ as kilolitres

(iv) $15 \mathrm{~L} 25 \mathrm{~mL}$ as litres

(v) $4 \mathrm{~kL} 289 \mathrm{~L}$ as kilolitres

Multiple Choice Questions (MCQs)

Tick (✔) the correct option.

9. To change grams into kilograms, we divide by

(a) 100

(b) 10

(c) 1000

(d) 10000

10. 35 litres $17 \mathrm{~mL}$ is equal to

(a) $35.17$ litres

(b) $35.170$ litres

(c) $35.017$ litres

(d) $35.0017$ litres

11. The track used by the first successful steam locomotive was 15300 metres long. How many kilometres long was it?

(a) $153 \mathrm{~km}$

(b) $1.53 \mathrm{~km}$

(c) $15.3 \mathrm{~km}$

(d) $1530 \mathrm{~km}$

12. A cricket pitch is about $264 \mathrm{~cm}$ wide. In metres it is equal to

(a) $26.4 \mathrm{~m}$

(b) $2.64 \mathrm{~m}$

(c) $0.264 \mathrm{~m}$

(d) $0.0264 \mathrm{~m}$

13. The weight of a basket ball is about $600000 \mathrm{mg}$. It is

(a) less than $600 \mathrm{~g}$

(b) greater than $600 \mathrm{~g}$

(c) equal to $600 \mathrm{~g}$

(d) none of these

14. The heights of Jaya, Sabina, Sanju and Rohit are $1.61 \mathrm{~m}, 162 \mathrm{~cm}, 1600 \mathrm{~mm}$ and $1640 \mathrm{~mm}$ respectively. Who is the tallest of them all?

(a) Jaya

(b) Sabina

(c) Sanju

(d) Rohit