Page 146 - MathGPT_V1.0_C3

E:\Working\Brother_Education\Preparatory_Stage_Maths-3_(11-09-2024)\Open_Files\CHAP_09
\ 11-Sep-2024 Sonia Suyal Proof-1 Reader’s Sign _______________________ Date __________

Alternative: On converting cm into m, write the last two digits as cm and the remaining
digit as m.

For example, 3261 cm = 32 m 61 cm.
Kilometre into Metre

To convert kilometres into metres, we multiply the number of kilometres by 1000.
Example 4: Aditi goes to school daily by her bicycle. The distance of the school from her

house is 3 km. What is the distance in m?
Note
Solution: 3 km = (3 × 1000) m = 3000 m 1 km = 1000 m.
Kilometre and Metre into Metre

To convert kilometres and metres into metres, we multiply the number of kilometres by
1000 and add the product to the number of metres.
Example 5: Raju travels a distance of 8 km 490 m. Find the distance in m.

Solution: 8 km 490 m = (8 × 1000) m + 490 m = 8000 m + 490 m = 8490 m

Thus, Raju travels 8490 m.
Metre into Kilometre

To convert metres into kilometres, we divide the number of metres by 1000.
Example 6: Convert 7725 m into km.

Solution: 7725 m = 7000 m + 725 m Or 7725 m = (7725 ÷ 1000) km

= 7 km + 725 m = 7 km 725 m 1000 7725 7 km

= 7 km 725 m 7000

So, 7725 m = 7 km 725 m. 725 m
Alternative: To convert m into km, just write the last three digits as m and the remaining
digits as km. Remember

For example, 1332 m = 1 km 332 m. 1 1
250 m = km, 500 m = km, 1000 m = 1 km.
4 2
Practice time 9a

1. Measure the length of the following objects with the help of a scale.
(a) ________ cm

(b) ________ cm

(c) ________ cm
(d) ________ cm

144 Mathematics-3