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

Why do we use compatible numbers in division?

Back

We use compatible numbers in division to make it easier to estimate the quotient and perform calculations without a calculator.

Front

What is the compatible number for 432 ÷ 81?

Back

400 ÷ 80

Front

What is the compatible number for 746 ÷ 83?

Back

720 ÷ 80

Front

What is the compatible number for 122 ÷ 59?

Back

120 ÷ 60

Front

What is the compatible number for 485 ÷ 92?

Back

450 ÷ 90

Front

What is the compatible number for 228 ÷ 19?

Back

200 ÷ 20

Front

How do you find a compatible number for division?

Back

To find a compatible number for division, look for numbers that are close to the original numbers but easier to divide.

Front

What is an example of rounding to find compatible numbers?

Back

For 432, rounding to 400 makes it easier to divide by 80.

Front

What is the compatible number for 500 ÷ 25?

Back

500 ÷ 25 is already a simple division, but a compatible number could be 500 ÷ 20.