Rounding

Front

What is rounding?

Back

Rounding is the process of adjusting a number to make it simpler and easier to work with, usually to the nearest ten, hundred, thousand, etc.

Tags

CCSS.3.NBT.A.1

CCSS.4.NBT.A.3

Front

How do you round a number 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.

Tags

CCSS.3.NBT.A.1

CCSS.4.NBT.A.3

Front

Round 48,376 to the nearest thousand.

Back

48,000

Tags

CCSS.3.NBT.A.1

CCSS.4.NBT.A.3

Front

What is the purpose of estimating in math?

Back

Estimating helps to quickly find an approximate value, making calculations easier and faster.

Front

How do you estimate the sum of two numbers?

Back

To estimate the sum, round each number to the nearest ten or hundred, then add the rounded numbers.

Front

Estimate the total of 46 and 15 by rounding.

Back

50 (46 rounds to 50 and 15 rounds to 10, so 50 + 10 = 60).

Front

What does it mean to round to the nearest hundred?

Back

Rounding to the nearest hundred means adjusting a number to the closest multiple of 100.

Tags

CCSS.3.NBT.A.1

CCSS.4.NBT.A.3

Front

Round 1,306 to the nearest hundred.

Back

1,300

Tags

CCSS.3.NBT.A.1

CCSS.4.NBT.A.3

Front

Which number does NOT round to 400 when rounding to the nearest hundred?

Back

345

Tags

CCSS.3.NBT.A.1

CCSS.4.NBT.A.3

Front

What is the rule for rounding up?

Back

If the digit to the right of the rounding place is 5 or greater, round up.

Tags

CCSS.3.NBT.A.1

CCSS.4.NBT.A.3