Rita has a ribbon of length 2070 mm. Sita has a ribbon whose length is 1232 mm shorter than that of Rita's ribbon. Approximate the length of ribbon that Sita has, to nearest thousand.
1000
Length of Rita's ribbon = 2070 mm
2070 can be estimated to nearest thousand as 2000.
1232 can be estimated to nearest thousand as 1000.
Estimated length of ribbon that Sita's has = 2000 - 1000 = 1000 mm