Estimating Quotients

Front

What is estimating quotients?

Back

Estimating quotients means finding a close value to the actual quotient of two numbers, often using compatible numbers to make calculations easier.

Front

What are compatible numbers?

Back

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

Front

Estimate the quotient using compatible numbers: 2,460 ÷ 81

Back

30

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; if it's less than 5, round down.

Front

What is the purpose of estimating quotients?

Back

The purpose of estimating quotients is to quickly assess the size of the answer without performing exact calculations.

Front

Estimate the quotient using compatible numbers: 1,500 ÷ 50

Back

30

Front

What is the first step in estimating a quotient?

Back

The first step in estimating a quotient is to identify compatible numbers that are close to the original numbers.

Front

Estimate the quotient using compatible numbers: 3,600 ÷ 90

Back

40

Front

Why is it useful to estimate quotients in real life?

Back

Estimating quotients is useful in real life for making quick calculations, budgeting, and checking the reasonableness of answers.

Front

Estimate the quotient using compatible numbers: 2,000 ÷ 40

Back

50