Exercise 6C
Question 1
1. Add:
(i) $7.3,8.5$
(ii) $6.43,3.58$
(iii) $0.078,0.005,0.06$
(iv) $4.8,0.0006$
(v) $9.56,11,26.074$
Question 2
2. Subtract:
(i) $8.23$ from $9.57$
(ii) $12.83$ from $74.05$
(iii) $8.154$ from $11.7$
(iv) $0.00096$ from $0.07$
(v) $87.00392$ from $305.48$
(vi) $293.028$ from $400.016$
Question 3
3. Simplify:
(i) $8-0.5-0.78-0.04$
(ii) $2.02-0.2-0.002+20$
(iii) $41.73-8.74-7.68-13.06$
Question 4
4. Shreya bought a book for $₹ 127.50$, a geometry box for $₹ 54.25$ and a notebook for $₹ 24.75$. How much money did she spend?
Question 5
5. The bill for three books was $₹ 398.47$. The first book cost $₹ 73.69$ and the second $₹ 85.04$. Find the cost of the third book.
6. At a swimming class Rakhi spent $6.9$ minutes practising butterfly stroke. $9.5$ minutes practising freestyle stroke, $4.8$ minutes practising backstroke and $0.6$ minutes practising floating. Rest of the time she practised breast stroke. If her swimming lesson is 45 minutes long, how much time does she have left for practising breast stroke?
7. A box of assorted biscuits weighs $2.5 \mathrm{~kg}$. Its components are: Chocolate Biscuits $-525 \mathrm{~g}$. Almond Biscuits $580 \mathrm{~g}$. Coconut Biscuits - $350 \mathrm{~g}$ and Vanilla Biscuits - $515 \mathrm{~g}$. What is the weight of the empty box in kilograms?
8. A rectangular wooden picture frame is $1.08 \mathrm{~m}$ wide and $2.63 \mathrm{~m}$ long. What is the smallest length of wood in metres required to make this frame?
9. The distance between Dhruv's office and home is $7 \mathrm{~km} 5 \mathrm{~m}$. He walks $1 \mathrm{~km} 125 \mathrm{~m}$ to the metro station A. The distance travelled by metro to metro station B is $4 \mathrm{~km} 65 \mathrm{~m}$. What distance does he have to walk from the metro station $B$ to the office? Give your answer in kilometres.
Multiple Choice Questions (MCQs)
Tick (✔) the Correct Option.
10. There is $8205 \mathrm{~mL}$ of juice in a can. $6.046 \mathrm{~L}$ is distributed equally among the children attending a birthday party. How much juice is still there in the can?
(a) $0.2159 \mathrm{~L}$
(b) $21.59 \mathrm{~L}$
(c) $2.159 \mathrm{~L}$
(d) $2.159 \mathrm{~mL}$
11. The normal body temperature of a human being is $98.6^{\circ} \mathrm{F}$. Aradhya's temperature rose by $3.7^{\circ}$. How much temperature did he have
(a) $101.1^{\circ} \mathrm{F}$
(b) $102.3^{\circ} \mathrm{F}$
(c) $94.9^{\circ} \mathrm{F}$
(d) $101.3^{\prime \prime} \mathrm{F}$
Can you tell the answers and the process
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