To estimate 22 of 78, you can round the numbers to make the math easier. Start by rounding 78 to a more manageable number, such as 80. Then, you can calculate 20% of 80, which is a simpler way to approach the problem.
Here’s how it works: 20% of 80 is calculated as follows:
- First, find 10% of 80, which is 8.
- Then, multiply that by 2 to get 20%, giving you 16.
Now, you have an estimate of 16 for 22 of 78. To verify if your actual answer is reasonable, you can compare the exact calculation of 22/78 to this estimated value. If your precise answer is close to this estimate, then your answer is probably reasonable.