Estimate Quotients Using Compatible Numbers

Front

What is the process of estimating quotients using compatible numbers?

Back

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

Front

What are compatible numbers?

Back

Compatible numbers are numbers that are easy to work with mentally, often rounded to make calculations simpler, such as 20 and 30 for dividing by 10.

Front

Estimate the quotient: 315 ÷ 8.

Back

40

Front

Estimate the quotient: 490 ÷ 8.

Back

60

Front

Estimate the quotient: 474 ÷ 9.

Back

50

Front

Estimate the quotient: 358 ÷ 3.

Back

120

Front

Estimate the quotient: 179 ÷ 9.

Back

20

Front

Why is it useful to estimate quotients?

Back

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

Front

What is the estimated quotient of 500 ÷ 8 using compatible numbers?

Back

60 (rounding 500 to 480, which is divisible by 8).

Front

How can rounding help in estimating quotients?

Back

Rounding helps simplify the numbers, making it easier to perform mental math and arrive at a quick estimate.