Place Value and Decimal Review

Front

What is place value?

Back

Place value is the value of a digit based on its position in a number. For example, in the number 617.32, the digit 6 is in the hundreds place, so its value is 600.

Front

What is the expanded form of 617.32?

Back

(6 x 100) + (1 x 10) + (7 x 1) + (3 x 1/10) + (2 x 1/100)

Front

What does the Associative Property state?

Back

The Associative Property states that the way numbers are grouped in addition or multiplication does not change their sum or product. For example, 12 + (3 + 4) = (12 + 3) + 4.

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What is the Identity Property of Addition?

Back

The Identity Property of Addition states that when you add zero to any number, the sum is that number. For example, 5 + 0 = 5.

Front

What is the Identity Property of Multiplication?

Back

The Identity Property of Multiplication states that when you multiply any number by one, the product is that number. For example, 9 x 1 = 9.

Front

What is the Zero Property of Multiplication?

Back

The Zero Property of Multiplication states that when you multiply any number by zero, the product is zero. For example, 7 x 0 = 0.

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What is the Commutative Property?

Back

The Commutative Property states that the order in which two numbers are added or multiplied does not change the sum or product. For example, 3 + 4 = 4 + 3.

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What is the difference between the Associative and Commutative Properties?

Back

The Associative Property deals with grouping of numbers, while the Commutative Property deals with the order of numbers.

Front

What is the expanded form of .26?

Back

.26 can be expressed as (2 x 1/10) + (6 x 1/100).

Front

How do you convert a decimal to a fraction?

Back

To convert a decimal to a fraction, write the decimal over its place value (e.g., 0.75 = 75/100) and simplify if possible.