The DAV Class 4 Maths Book Solutions and DAV Class 4 Maths Chapter 5 Worksheet 4 Solutions of Length offer comprehensive answers to textbook questions.
DAV Class 4 Maths Ch 5 WS 4 Solutions
Question 1.
Solve the following word problems.
(a) Neetu bought 3 m 75 cm of cloth for shirt and 2 m 20 cm of cloth for trouser. What is total length of cloth she bought?
Answer:
Neetu bought cloth for shirt = 3m 75cm
Neetu bought cloth for trouser = 2m 20cm
Total length = 5m 95km
Thus, total length of cloth is 5 m 95 cm.
(b) Amit travelled 15 km 550 m by train, 12 km 400 m by bus and 1 km 250 m by scooter. How much distance did he travel in all?
Answer:
Amit travelled by train = 15km 550m
Amit travelled by bus = 12km 400 m
Amit travelled by scooter = 1km 250m
Total distance = 29km 200m
Thus, Amit travelled 29 km 200 m in all.
(c) Mrs. Renu has a ribbon 16 m 75 cm long. She cuts it into two pieces. One piece is 8 m 90 cm. Find the length of the other piece.
Answer:
Total length of ribbon = 16m 75cm
Length of one piece of ribbon = 8m 90cm
Length of other piece of ribbon = 7m 85cm
Thus, the length of other piece is 7 m 85 cm.
(d) The heights of Ram and Shyam are 1 m 75 cm and 1 m 28 cm respectively. Who is taller and by how much?
Answer:
Height of Ram = 1 m 75
Height of Shyam = 1 m 28 cm.
1 m 75 cm > 1 m 28 cm m cm
∴ Height of Ram = 1 m 75 cm
Height of Shyam = 1m 28 cm
Comparison = 0 m 47 cm
Thus, Ram is 47 cm taller than Shyam.
(e) An ant climbed 9 m 50 cm on a wall. Then it came down 4 m 75 cm along. The same wall. How far is the ant from the starting point?
Answer:
Ant climbed a distance on wall = 9m 50 cm
Ant came down = – 4m 75cm
Distance from starting point = 4m 75cm
Thus, the ant is 4 m 75 cm away from the starting point.
DAV Class 4 Maths Chapter 5 Value Based Questions
Question 1.
How much distance will Amit’s father travel now for dropping all the children to school?
Answer:
Distance travel in dropping Amit = More Distance travel in dropping three children
Thus, 4 m 75 cm away from the starting point.
Question 2.
What are the advantages of car pooling?
Answer:
Car pooling saves fuel and also environment from getting polluted.
Word Problems
E.g.1.
Mala needs a garland of 12 m 67 cm for decoration of door and 7 m 15 cm for window. What is the total length of garland needed by Mala.
Answer:
We have to add the length of garland required to decorate door and window to get total length of garland.
Length of garland for door = 12m 67 cm
Length of garland for window = 7 m 15 cm
Total length = 19m 82cm
E.g.2.
Meeta bought 75 m 60 cm cloth roll. If 58 m 70 cm of the cloth is used for making curtain for doors and windows, how much cloth is left on the roll?
Answer:
We have to subtract the length of cloth used for making curtains from the cloth roll.
Total length of cloth = 75m 60 cm
Cloth used in curtains = – 58m 70 cm
Cloth left = 16m 90cm
Additional Questions
Question 1.
Convert each of the following into metres:
(a) 208 km
Answer:
208 km
= 208 x 1000m
= 208000 m
(b) 1 km 25 m
Answer:
1 km 25 m
= 1 × 1000m + 25m
= 1025 m
(c) 4 km 65
Answer:
4 km 65m
= 4 × 1000m 65m
= 4065 m
(d) 5 km 30 m
Answer:
5km 30m
= 5 × 1000m + 30 m
= 5030 m
(e) 10 km 165 m
Answer:
10 km 165 m
= 10 × 1000 m + 165 m
= 10165 m
Question 2.
(a) Convert 600 cm into m and cm.
Answer:
(600 + 100) meters (1cm = \(\frac{1}{100}\)m)
= 6 metres.
(b) Convert 748 cm into m and cm.
Answer:
(748 100) meters (1cm = \(\frac{1}{100}\)m)
= 7 m 48 cm.
(c) Convert 546 cm into m and cm.
Answer:
(546 100) meters (1cm = \(\frac{1}{100}\)m)
= 5 m 46 cm.
Question 3.
Convert the following kilometres into metres:
(i) 740 km
Answer:
740 × 1000 metres (1 km = 1000 m)
= 740000 metres.
(ii) 71 km
Answer:
71 × 1000 metres (1km = 1000 m)
= 71000 metres
(iii) 405 km
Answer:
405 × 1000 metres (1km = 1000 m)
= 405000 metres
Question 4.
Add the following:
(i) 17 m 50 cm and 15 m 20 cm.
Answer:
32 m 70 cm
(ii) 72 km 350 m and 43 km 790 m.
Answer:
116 km 140 m
(iii) 26 m 20 cm and 36 m 50 cm.
Answer:
62 m 70 cm
(iv) 35 km 150 m and 43 km 620 m.
Answer:
78 km 770 m
Question 5.
Subtract:
(a) 10 m 57 cm and 4 m 96 cm.
Answer:
5m 61cm
(b) 7 m 80 cm and 3 m 95 cm.
Answer:
3m 85cm
(c) 6 km 300 m and 2 km 120 m.
Answer:
4km 180m
(d) 47 km 690 m and 34 km 695 m.
Answer:
12km 995m
Question 6.
Meenu bought 19 m 65 cm cloth for school uniform. 15 m 70 cm cloth get used in making uniform. Find the length of cloth left? m cm
Answer:
Total length of cloth = 19 m 65 cm
Length of cloth used = 15 m 70 cm
Length of cloth left = 3 m 95 cm
Thus, 3 m 95 cm cloth left with her.