Rounding, estimating sums, properties of addition grade

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, or other place value.

Front

Round 27 to the nearest TEN.

Back

30

Front

What are the commutative and associative properties of addition?

Back

The commutative property states that numbers can be added in any order (e.g., a + b = b + a). The associative property states that the way numbers are grouped does not change their sum (e.g., (a + b) + c = a + (b + c)).

Front

Solve using the properties of addition: 36 + 18 + 24 = ?

Back

78

Front

Solve using the properties of addition: 3 + 8 + 7 = ?

Back

18

Front

Estimate the sum: 123 + 456 by rounding to the nearest hundreds.

Back

600

Front

Round 440 to the nearest hundred.

Back

400

Front

What is the nearest ten to 45?

Back

50

Front

What is the nearest hundred to 250?

Back

300

Front

Estimate the sum: 78 + 34 by rounding to the nearest ten.

Back

110