TEK 5.3 (A) Estimation Flashcard #2

Front

What is estimation in mathematics?

Back

Estimation is a method used to find an approximate value that is close to the exact amount, often used for simplifying calculations.

Front

How do you round numbers to the nearest thousand?

Back

To round a number to the nearest thousand, look at the hundreds digit. If it is 5 or more, round up; if it is 4 or less, round down.

Front

What is the approximate sum of 4,315 and 7,684?

Back

12,000

Front

What is the approximate difference of 684,215 and 329,478?

Back

400,000

Front

How do you estimate the result of a subtraction problem?

Back

Round both numbers to the nearest ten, hundred, or thousand, then subtract the rounded numbers.

Front

What is the approximate difference of 28,750 and 2,980?

Back

26,000

Front

What is the approximate difference of 6,450 and 3,210?

Back

3,000

Front

How do you estimate the result of a division problem?

Back

Round the dividend and divisor to the nearest ten, hundred, or thousand, then divide the rounded numbers.

Front

What is the approximate result of 3,456 divided by 34?

Back

100

Front

Why is estimation useful in everyday life?

Back

Estimation helps in making quick calculations, budgeting, and assessing quantities without needing exact numbers.