Add Decimals and Estimate the Answer
We can estimate answers to complicated additions by rounding both decimals to the nearest whole numbers before adding them together.
Example 1
64.51 + 18.15 can be estimated by working out 65 + 18 = 83
Example 2
71.17 + 54.02 can be estimated by working out 71 + 54 = 125
Example 3
86.90 + 25.02 can be estimated by working out 87 + 25 = 112
Now, let's put this method into practise.