Rounding to Nearest 10 & 100

Front

What is rounding in mathematics?

Back

Rounding is the process of adjusting the digits of a number to make it simpler or to make it easier to work with, typically by increasing or decreasing it to the nearest specified place value.

Tags

CCSS.3.NBT.A.1

CCSS.4.NBT.A.3

Front

What does it mean to round to the nearest ten?

Back

Rounding to the nearest ten means adjusting a number to the closest multiple of ten. If the last digit 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

What is the rule for rounding numbers ending in 5?

Back

When rounding numbers that end in 5, you typically round up to the next whole number if the digit before the 5 is odd, and round down if it is even.

Tags

CCSS.3.NBT.A.1

CCSS.4.NBT.A.3

Front

Round the number 47 to the nearest ten.

Back

50

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CCSS.3.NBT.A.1

CCSS.4.NBT.A.3

Front

Round the number 82 to the nearest ten.

Back

80

Tags

CCSS.3.NBT.A.1

CCSS.4.NBT.A.3

Front

How do you round the number 123 to the nearest hundred?

Back

To round 123 to the nearest hundred, look at the tens digit (2). Since it is less than 5, round down to 100.

Tags

CCSS.3.NBT.A.1

CCSS.4.NBT.A.3

Front

What is the nearest hundred to the number 250?

Back

The nearest hundred to 250 is 300.

Tags

CCSS.3.NBT.A.1

CCSS.4.NBT.A.3

Front

How do you determine the nearest ten for the number 94?

Back

To determine the nearest ten for 94, look at the last digit (4). Since it is less than 5, round down to 90.

Tags

CCSS.3.NBT.A.1

CCSS.4.NBT.A.3

Front

What is the nearest ten for the number 67?

Back

The nearest ten for 67 is 70.

Tags

CCSS.3.NBT.A.1

CCSS.4.NBT.A.3

Front

Explain the difference between rounding to the nearest ten and rounding to the nearest hundred.

Back

Rounding to the nearest ten focuses on the last digit (units place) and adjusts to the closest multiple of ten, while rounding to the nearest hundred focuses on the last two digits (tens and units) and adjusts to the closest multiple of hundred.

Tags

CCSS.3.NBT.A.1

CCSS.4.NBT.A.3