Final answer:
To estimate the quotient of 56÷3, round 56 to the nearest ten, which gives 60. Since 60 divided by 3 equals 20, the estimated quotient is 20.
Step-by-step explanation:
To estimate the quotient of 56÷3, you can round the numbers to make the calculation simpler. Since 3 is already a single-digit whole number, we can leave it as is. Meanwhile, 56 can be rounded to the nearest ten to make mental calculation easier, although 56 is itself a pretty straightforward number to divide by 3. But for the sake of estimation, let's round it to 60. So, instead of dividing 56 by 3, we divide 60 by 3, which is a simpler operation.
60 divided by 3 equals 20.
Therefore, the estimated quotient of 56÷3 is approximately 20.