# Maharashtra Board Class 5 Maths Solutions Chapter 9 Decimal Fractions Problem Set 39

Balbharti Maharashtra Board Class 5 Maths Solutions Chapter 9 Decimal Fractions Problem Set 39 Textbook Exercise Important Questions and Answers.

## Maharashtra State Board Class 5 Maths Solutions Chapter 9 Decimal Fractions Problem Set 39

Question 1.
Write how many rupees and how many paise.

(1) ₹ 58.43
58 rupees 43 paise.

(2) ₹ 9.30
9 rupees 30 paise.

(3) ₹ 2.30
2 rupees 30 paise.

(4) ₹ 2.3
2 rupees 30 paise.

Question 2.
Write how many rupees in decimal form.

(1) 6 rupees 25 paise
₹ 6.25

(2) 15 rupees 70 paise
₹ 15.70

(3) 8 rupees 5 paise
₹ 8:05

(4) 22 rupees 4 paise
₹ 22.04

(5) 720 paise
₹ 7.20

Question 3.
Write how many metres and how many centimetres.

(1) 58.75 m
58 m 75 cm

(2) 9.30 m
9 m 30 cm

(3) 0.30 m
30 cm

(4) 0.3 m
30 cm

(5) 1.62 m
1 m 62 cm

(6) 91.4 m
91 cm 40 cm

(7) 7.02 m
7 m 2 cm

(8) 0.09 m
9 cm

Question 4.
Write how many metres in decimal form.

(1) 1 m 50 cm
1.5 m

(2) 50 m 40 cm
50.40 m

(3) 50 m 4 cm
50.04 m

(4) 734 cm
7.34 m

(5) 10 cm
0.1 m

(6) 2 cm
0.02 m

Question 5.
Write how many centimetres and how many millimetres.

(1) 6.9 cm
6 cm 9 mm

(2) 20.4 cm
20 cm 4 mm

(3) 0.8 cm
8 mm

(4) 0.5 cm
5 mm

Question 6.
Write how many centimetres in decimal form.
(1) 7 cm 1 mm
7.1 cm

(2) 16 mm
1.6 cm

(3) 144 mm
14.4 cm

(4) 8 mm
0.8 cm

Writing half, quarter, three-quarters and one and a quarter in decimal form

‘Half’ is usually written as $$\frac{1}{2}$$. To convert this fraction into decimal form, the denominator of $$\frac{1}{2}$$ must be converted into an equivalent fraction with denominator 10.

$$\frac{1}{2}=\frac{1 \times 5}{2 \times 5}=\frac{5}{10}$$ so the decimal form of $$\frac{1}{2}$$ will be $$\frac{5}{10}$$ or 0.5 Just as $$\frac{1}{2}=\frac{1 \times 5}{2 \times 5}=\frac{5}{10}$$ = 0.5, note that $$\frac{1}{2}=\frac{1 \times 50}{2 \times 50}=\frac{50}{100}$$ = 0.50

Therefore, ‘half’ is written as ‘0.5’ or 0.50’. ‘Quarter’ and ‘three quarters’ are written in fractions as $$\frac{1}{4}$$ and $$\frac{3}{4}$$ respectively. Let us convert them into decimal fractions. 10 is not divisible by 4. Therefore, the denominators of $$\frac{1}{4}$$ and $$\frac{3}{4}$$ cannot be made into fractions with multiples of 10. However, 4 × 25 = 100, so the denominator can be 100.

A quarter $$=\frac{1}{4}=\frac{1 \times 25}{4 \times 25}=\frac{25}{100}=0.25$$
and Three quarters $$=\frac{3}{4}=\frac{3 \times 25}{4 \times 25}=\frac{75}{100}=0.75$$
One and a quarter = 1 $$\frac{1}{4}$$ = 1.25
One and a half = 1 $$\frac{1}{2}$$ = 1.50 = 1.5
One and three quarters = 1 $$\frac{3}{4}$$ = 1.75
Seventeen and a half = 17 $$\frac{1}{2}$$ = 17.50 = 17.5

Question 1.
Write how many rupees and how many paise.

(1) ₹ 147.5
1 hundred and 47 rupees 50 paise.

(2) ₹ 40.4
40 rupees and 40 paise.

Question 2.
Write how many rupees in decimal form.

(1) 105 paise
₹ 1.05

(2) 6 rupees 6 paise
₹ 6.06

(3) 20 rupees 20 paise
₹ 20.2

Question 3.
Write how many metres and how many centimetres.

(1) 1.1m =
1 m 10 cm

(2) 120 cm =
1 m 20 cm

(3) 24.8 m =
24 m 80 cm

(4) 0.5 m =
50 cm

Question 4.
Write how many metres in decimal form.

(1) 110 cm =
1.1m

(2) 60 cm =
0.6 m

Question 5.
Write how many centimetres and how many millimetres.

(1) 0.1 cm =
1 mm

(2) 10.5 cm =