53A estimate word problems all 4 operations

Front

What is estimation in mathematics?

Back

Estimation is a method used to find an approximate value that is close to the actual value, often used when exact calculations are not necessary.

Front

How do you estimate the sum of two numbers?

Back

To estimate the sum, round each number to the nearest ten or hundred and then add the rounded numbers.

Front

What is the best way to estimate the total number of items when given a group of items?

Back

Add the rounded values of each group to get an approximate total.

Front

How do you estimate the difference between two numbers?

Back

Round each number to the nearest ten or hundred and subtract the smaller rounded number from the larger one.

Front

What is the process of rounding numbers?

Back

Rounding is adjusting a number to the nearest specified place value, such as the nearest ten or hundred.

Front

How can you estimate the product of two numbers?

Back

Round each number to the nearest ten or hundred and then multiply the rounded numbers.

Front

What is the best estimate for the quotient of two numbers?

Back

Round the dividend and divisor to the nearest ten or hundred and then divide the rounded numbers.

Front

If a pool holds 3,180 gallons and splashes out 420 gallons daily, how do you estimate the days to empty it?

Back

Divide the total gallons by the estimated gallons splashed out per day (3,180 ÷ 420 ≈ 7.5 days).

Front

How do you estimate the total distance traveled by multiple people?

Back

Round each person's distance to the nearest hundred and then add the rounded distances.

Front

What is the estimated difference in visitors between two days?

Back

Round the number of visitors for each day and subtract the rounded number of visitors on the first day from the second.