Estimating Sums and Differences

Front

What is the process of estimating sums using rounding?

Back

Estimating sums using rounding involves adjusting the numbers to the nearest ten, hundred, or thousand to simplify addition, making it easier to calculate an approximate total.

Front

How do you round the number 468 to the nearest hundred?

Back

The number 468 rounds to 500 when rounded to the nearest hundred.

Tags

CCSS.3.NBT.A.1

CCSS.4.NBT.A.3

Front

What is the estimated sum of 468 and 224 when rounded to the nearest hundred?

Back

The estimated sum is 700, as 468 rounds to 500 and 224 rounds to 200.

Front

What is the estimated sum of 46,345 and 7,512 when rounded to the nearest thousand?

Back

The estimated sum is 58,000, as 46,345 rounds to 46,000 and 7,512 rounds to 8,000.

Front

What is the estimated sum of 12,921 and 38,110 when rounded to the nearest thousand?

Back

The estimated sum is 50,000, as 12,921 rounds to 13,000 and 38,110 rounds to 38,000.

Front

What is the process of estimating differences using rounding?

Back

Estimating differences using rounding involves adjusting the numbers to the nearest ten, hundred, or thousand to simplify subtraction, making it easier to calculate an approximate difference.

Front

How do you round the number 18,324 to the nearest thousand?

Back

The number 18,324 rounds to 18,000 when rounded to the nearest thousand.

Tags

CCSS.3.NBT.A.1

CCSS.4.NBT.A.3

Front

What is the estimated difference of 18,324 and 5,937 when rounded to the nearest thousand?

Back

The estimated difference is 14,000, as 18,324 rounds to 18,000 and 5,937 rounds to 6,000.

Front

How do you round the number 99,553 to the nearest thousand?

Back

The number 99,553 rounds to 100,000 when rounded to the nearest thousand.

Tags

CCSS.3.NBT.A.1

CCSS.4.NBT.A.3

Front

What is the estimated sum of 99,553 and 4,227 when rounded to the nearest thousand?

Back

The estimated sum is 104,000, as 99,553 rounds to 100,000 and 4,227 rounds to 4,000.