Estimate the following result:
968x539.
Step 1. Rounding off the numbers to the nearest hundred.
Since 968 is nearest to 1000 than to 900.
Therefore 968 rounded off as 1000.
Since 539 is nearest to 500 than to 600.
Therefore 539 rounded off as 500.
Step 2.Simplify
1000x500=500000
Hence estimate value of 968x539 is 500000.
39x311.
6893-789.
6398+17928.
Estimate the following sums by rounding off the numbers to their nearest thousands and compare the result with the actual sum.
a) 34,253+5,524
Estimate the following differences by rounding off the numbers to their nearest hundreds and compare the result with the actual difference.
b) 12,507-223