Front

What is estimation in addition and subtraction?

Back

Estimation is a method used to find an approximate value rather than an exact answer, often by rounding numbers.

Front

How do you round a number to the nearest ten thousand?

Back

Look at the thousands place. If it's 5 or more, round up; if it's 4 or less, round down.

Front

Estimate the difference: 47,623 - 12,385 after rounding to the nearest ten thousand.

Back

40,000

Front

Estimate the sum: 123 + 456 after rounding to the nearest hundred.

Back

600

Front

Estimate the sum: 65,447 + 124,557 after rounding to the nearest ten thousand.

Back

190,000

Front

Estimate the sum: 2,764 + 4,851 after rounding to the nearest thousand.

Back

8,000

Front

Estimate the difference: 887,167 - 342,208 after rounding to the nearest ten thousand.

Back

550,000

Front

What is the nearest hundred to 456?

Back

500

Front

What is the nearest thousand to 2,764?

Back

3,000

Front

What is the nearest ten thousand to 47,623?

Back

50,000