Estimating Quotients

Front

What is the process of estimating quotients using compatible numbers?

Back

Estimating quotients using compatible numbers involves rounding the numbers to the nearest values that are easy to divide, making mental calculations simpler.

Front

What are compatible numbers?

Back

Compatible numbers are numbers that are easy to compute with mentally, often rounded to make calculations simpler, such as 40 and 20 for estimating 821 ÷ 41.

Front

Estimate the quotient of 750 ÷ 25 using compatible numbers.

Back

30, because 750 is close to 800 and 25 is close to 20.

Front

How do you estimate the quotient of a division problem?

Back

To estimate the quotient, round the dividend and divisor to compatible numbers, then divide the rounded numbers.

Front

What is the estimated quotient of 900 ÷ 45?

Back

20, because 900 is close to 900 and 45 is close to 50.

Front

In the context of estimating quotients, what does the term 'quotient' refer to?

Back

The quotient is the result of dividing one number by another.

Front

How can you use estimation to check the reasonableness of a division answer?

Back

By estimating the quotient and comparing it to the actual answer, you can determine if the answer is reasonable.

Front

What is the estimated quotient of 640 ÷ 32?

Back

20, because 640 is close to 640 and 32 is close to 30.

Front

Why is it useful to estimate quotients in real-life situations?

Back

Estimating quotients helps in making quick calculations without needing exact numbers, which is useful in budgeting, cooking, and other everyday tasks.

Front

What is the estimated number of barrels produced if an oil well produces 172 gallons of oil daily and a barrel holds 42 gallons?

Back

5 barrels, because 172 ÷ 42 is approximately 4.1, which rounds to 5.