Part 1
<span>Using rounding or compatible numbers, we estimate the product
to
Therefore, the estimate of the product </span><span>, using rounding and compatible numbers is about 15.</span>
Part 2
<span>Using rounding or compatible numbers, we estimate the quotient
to
Therefore, the estimate of the quotient </span><span>, using rounding and compatible numbers is about 9.</span>
Part 3
Given that Mr. Garcia's class ate
pizzas, Mrs Rizzoli's class ate <span>
pizzas,
and Mrs. Tindal's class ate </span><span>
pizzas.
Using benchmarks, we estimate the total number of pizzas eaten by all three classes as follows: </span>
, 
and <span>
Thus, the </span><span>total number of pizzas eaten by all three classes is given by
Therefore, </span>the <span>total number of pizzas eaten by all three classes is about 11.</span>
<span>Using rounding or compatible numbers, we estimate the product
to
Therefore, the estimate of the product </span><span>
Part 2
<span>Using rounding or compatible numbers, we estimate the quotient
to
Therefore, the estimate of the quotient </span><span>
Part 3
Given that Mr. Garcia's class ate
Using benchmarks, we estimate the total number of pizzas eaten by all three classes as follows: </span>
Thus, the </span><span>total number of pizzas eaten by all three classes is given by
Therefore, </span>the <span>total number of pizzas eaten by all three classes is about 11.</span>