Estimation

Front

What is estimation?

Back

Estimation is a way to find an approximate value or answer, rather than an exact one.

Front

How do you round a number to the nearest hundred?

Back

Look at the tens digit. If it is 5 or more, round up. If it is 4 or less, round down.

Front

Round 556 to the nearest hundred.

Back

600

Front

What is the estimated sum of 24 and 67?

Back

90

Front

How do you estimate the total of two numbers?

Back

Round each number to the nearest ten or hundred, then add the rounded numbers.

Front

Amy had 13 jelly beans in her left hand and 28 in her right hand. Estimate how many jelly beans she had in all.

Back

40

Front

Round 143 to the nearest ten.

Back

140

Front

What is the estimated sum of 32 and 49?

Back

80

Front

What is rounding?

Back

Rounding is adjusting a number to make it simpler but keeping its value close to what it was.

Front

When rounding to the nearest ten, what do you look at?

Back

You look at the ones digit.