Question

obtain an estimate for the following computation by rounding the numbers so that the resulting arithmetic can easily be performed by hand or in your head. then, use a calculator to perform the computation. how reasonable is your estimate when compared to the actual answer? 328 + 559 round the two numbers to the nearest ten. an estimate of the sum is \boxed{}

Explanation:

Step1: Round 328 to nearest ten

Look at the ones digit (8) of 328. Since \( 8 \geq 5 \), round up. So \( 328 \approx 330 \).

Step2: Round 559 to nearest ten

Look at the ones digit (9) of 559. Since \( 9 \geq 5 \), round up. So \( 559 \approx 560 \).

Step3: Add the rounded numbers

Add \( 330 + 560 \). \( 330 + 560 = 890 \).

Answer:

890