Page 3 - PPT 4

Subtraction with kilometres and metres

We arrange km and m in different columns and then subtract them separately.

■ Example: Subtract 102 km 100 m from 348 km 50 m

■ km m Step-1 Subtract m column first
0 – 0 = 6 (write)

3 4 8 0 5 0 5 – 0 = 5 (write)

After borrowing 1 from km column: 10 -1 = 9

- 1 0 2 1 0 0 Step-2 Then subtract km column

Left 7 – 2 = 5 (write)

= 2 4 5 9 5 0 4 - 0 = 4 (write)

3 - 1 = 2 (write)

Thus, 348 km 50 m - 102 km 100 m = 245 km 950 m