Estimating Quotients

Front

What is estimation in mathematics?

Back

Estimation is the process of finding an approximate value that is close to an exact amount, often used to simplify calculations.

Front

How do you estimate a quotient?

Back

To estimate a quotient, round the dividend and divisor to the nearest convenient numbers and then divide.

Front

What is the estimated quotient of 278 divided by 31?

Back

The estimated quotient is 270 divided by 30.

Front

How can you estimate the number of items per bin?

Back

To estimate the number of items per bin, divide the total number of items by the number of bins using rounded numbers.

Front

What is the best estimate for 289 divided by 9?

Back

The best estimate is about 30 stuffed animals per bin.

Front

What is the process for estimating a product?

Back

To estimate a product, round each factor to a nearby number that is easier to multiply and then multiply those rounded numbers.

Front

What is the estimated product of 37 and 63?

Back

The estimated product is 40 times 60, which equals 2,400.

Front

How do you round numbers for estimation?

Back

To round numbers for estimation, look at the digit to the right of the place value you are rounding to; if it's 5 or more, round up, otherwise round down.

Front

What is the estimated product of 76 and 34?

Back

The estimated product is closest to 2,400.

Front

When estimating 372 divided by 41, what numbers should you use?

Back

You should change it to 360 divided by 40.