Compatible numbers in division

Front

What are compatible numbers?

Back

Compatible numbers are numbers that are easy to compute with mentally. They are often rounded numbers that make calculations simpler.

Front

Estimate the quotient: 2,325 divided by 5.

Back

The estimated quotient is between 400 and 500.

Front

Estimate the quotient: 2,753 divided by 9 using compatible numbers.

Back

The estimated quotient is 300.

Front

Estimate the quotient: 486 divided by 8 using compatible numbers.

Back

The estimated quotient is 60.

Front

Estimate the quotient: 331 divided by 6.

Back

The estimated quotient is between 50 and 60.

Front

Estimate the quotient: 1,780 divided by 6.

Back

The estimated quotient is between 200 and 300.

Front

Why do we use compatible numbers in division?

Back

We use compatible numbers to make division easier and quicker to calculate mentally.

Front

What is the first step in using compatible numbers for division?

Back

The first step is to round the dividend and divisor to numbers that are easy to work with.

Front

Give an example of compatible numbers for 75 divided by 4.

Back

Compatible numbers could be 80 and 4, making it easier to estimate.

Front

What is the estimated quotient of 1,200 divided by 5?

Back

The estimated quotient is 200.