Estimate Quotients Compatible Numbers

Front

What is an estimate?

Back

An estimate is a rough calculation or judgment of the value, number, quantity, or extent of something.

Front

What are compatible numbers?

Back

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

Front

Estimate the quotient using compatible numbers: 3,129 ÷ 42

Back

80

Front

Estimate the quotient using compatible numbers: 7,301 ÷ 76

Back

90

Front

Which expression will give the best whole-number estimate for 125 ÷ 64?

Back

120 ÷ 60

Front

Erin has 598 goldfish to split between 22 fish tanks. About how many goldfish are in each tank?

Back

30 goldfish in each tank.

Front

Estimate the quotient: 234 ÷ 41

Back

6

Front

How do you round numbers for estimation?

Back

To round numbers, 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

Estimating quotients helps to quickly determine a reasonable answer without performing exact calculations.

Front

What is the relationship between division and multiplication?

Back

Division is the process of finding how many times one number is contained within another, which is the inverse of multiplication.