Standard Mathematics Primary 3 Length and Mass

Wei Lin walks from school to the library, a distance of 1 km 600 m. She then walks from the library to her home, a distance of 2 km 400 m. What is the total distance Wei Lin walks? Give your answer in metres.

A 4000 m
B 3000 m
C 1000 m
D 4200 m
Show Worked Solution

Worked Solution

Step 1: Convert the first distance to metres. 1 km = 1000 m 1 km 600 m = (1 × 1000) + 600 = 1000 + 600 = 1600 m Step 2: Convert the second distance to metres. 2 km 400 m = (2 × 1000) + 400 = 2000 + 400 = 2400 m Step 3: Add the two distances. 1600 m + 2400 m = 4000 m Answer: Wei Lin walks a total of 4000 m.

Correct answer: 4000 m

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