Answer: 0.08.
Explanation:
To estimate the quotient of 3.53 ÷ 51, we can use a compatible number strategy.
First, round 3.53 to the nearest whole number, which is 4. Then, round 51 to the nearest whole number, which is also 51.
Now, divide 4 by 51.
Since 4 is smaller than 51, we know that the quotient will be less than 1.
Therefore, the estimate of 3.53 ÷ 51 is approximately 0.08.
Please note that this is only an estimate and the actual quotient may be slightly different.