Estimating Quotients

Front

What does it mean for numbers to be FRIENDLY for estimation?

Back

FRIENDLY numbers are those that are easy to work with mentally, often rounded to the nearest ten, hundred, or other convenient value to simplify calculations.

Front

How can you estimate the quotient of 360 ÷ 4?

Back

You can round 360 to 400 and divide by 4, which gives an estimated quotient of 100.

Front

What is the estimated quotient of 490 ÷ 7 when using FRIENDLY numbers?

Back

Round 490 to 500 and divide by 7, which gives an estimated quotient of about 71.

Front

How do you estimate 810 ÷ 9 using FRIENDLY numbers?

Back

Round 810 to 800 and divide by 9, which gives an estimated quotient of about 89.

Front

What is the best way to estimate 680 ÷ 10?

Back

You can use 680 as is, since it is already FRIENDLY, and the estimated quotient is 68.

Front

How can you estimate the quotient of 2700 ÷ 30?

Back

Round 2700 to 3000 and divide by 30, which gives an estimated quotient of 100.

Front

What is the purpose of estimating quotients?

Back

Estimating quotients helps to quickly assess the reasonableness of an answer and simplifies calculations.

Front

What are some common strategies for estimating quotients?

Back

Common strategies include rounding numbers to the nearest ten or hundred, using compatible numbers, and simplifying fractions.

Front

Why is it important to understand FRIENDLY numbers in estimation?

Back

Understanding FRIENDLY numbers allows for quicker mental calculations and helps in checking the accuracy of more complex calculations.

Front

What is the estimated quotient of 800 ÷ 8 using FRIENDLY numbers?

Back

Round 800 to 800 and divide by 8, which gives an estimated quotient of 100.