11
Question Circle the bigger length and find the difference.
(a) 11 mm and 1 cm Difference— ________________
(b) 26 mm and 2 cm Difference— ________________
(c) 20 cm and 201 mm Difference— ________________
(d) 1,020 mm and 1m Difference— ________________
(e) 2 m and 245 cm Difference— ________________
(f) 5,678 m and 6 km Difference— ________________
(g) 6 km 1,480m and 7 km 479m Difference— ________________
(a) 1 cm = 1 × 10 mm = 10 mm 11 mm > 10 mm So, 11 mm > 1 cm
Difference = 11 mm – 10 mm = 1 mm
(b) 2 cm = 20 mm 26 mm > 20 mm Difference – 26 mm – 2 cm
= 26 mm – 20 mm = 6 mm
(c) 20 cm = 200 mm 200 mm < 201 mm So, 20 mm < 201 mm
Difference = 201 mm – 200 mm = 1 mm
(d) 1 m = 100 cm = 1000 mm 1020 mm > 1000 mm
Difference = 1020 mm -1000 mm = 20 mm
(e) 2 m = 200 cm
200 cm < 245 cm
So, 2 m < 245 cm
Difference = 245 cm – 200 cm = 45 cm
(f) 6 km = 6 × 1000 m = 6000 m
5678 m < 6000 m
Difference = 6000 m 5678 m = 322 m
(g) 6 km 1480 m = 6000 m + 1480 m
= 7480 m 7 km 479 m
= 7000 m + 479 m
= 7479 m
So,7480 m > 7479 m
So, 6 km 1480 > 7 km 479 m
So, difference = 7480 m – 7479 m = 1 m
NCERT Textbook Pages 66-67
Multiplying and Dividing Lengths