Arithmetic Laws - Lesson 1
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Questions and Answers

If Aiden originally buys 1 chocolate cupcake and 2 vanilla cupcakes, what is the total number of cupcakes sold by him and Gabrielle if she buys 4 strawberry cupcakes?

  • 7 (correct)
  • 4
  • 6
  • 5

Which of the following best describes the commutative property?

  • Numbers may be swapped without changing the result. (correct)
  • Order changes the results of the operation.
  • Only applicable to addition, not multiplication.
  • Changing the grouping of numbers affects the total.

Using the commutative property, what is the sum of 25 + 28 + 15 if rearranged to 15 + 25 + 28?

  • 68 (correct)
  • 58
  • 70
  • 25

What is the result of the operation 3 x 5 based on the commutative property?

<p>15 (C)</p> Signup and view all the answers

What will be the total if Gabrielle decides to buy 2 chocolate cupcakes and 4 strawberry cupcakes instead of 4 strawberry cupcakes?

<p>8 (A)</p> Signup and view all the answers

In the expression 16 + 8 + 4, rearranging it to 4 + 16 + 8 highlights which property?

<p>Commutative Property (B)</p> Signup and view all the answers

If you add the numbers 123, 66, and 77, which of the following combinations using the commutative property yields the same total?

<p>123 + 77 + 66 (B)</p> Signup and view all the answers

Which statement correctly applies the associative property?

<p>2 + (3 + 4) = 9 (D)</p> Signup and view all the answers

What is the result of applying the commutative law in the calculation of $4 × 9 × 5$?

<p>180 (B)</p> Signup and view all the answers

Which equation illustrates the associative property with addition correctly?

<p>$6 + (4 + 5) = (6 + 4) + 5$ (A), $2 + 4 + 5 = (2 + 4) + 5$ (B), $3 + (2 + 1) = (3 + 1) + 2$ (C)</p> Signup and view all the answers

Using the associative property, what is the value of $2 × (3 × 4)$?

<p>24 (C)</p> Signup and view all the answers

If $5 × 15 × 2$ is rearranged using the commutative law, which of the following is a valid equivalent expression?

<p>$15 × 5 × 2$ (B), $5 × 2 × 15$ (C)</p> Signup and view all the answers

What is the correct expression when applying the distributive property to $3(4 + 5)$?

<p>$3 × 4 + 3 × 5$ (A)</p> Signup and view all the answers

Which of the following statements about the commutative and associative properties is incorrect?

<p>The associative property only applies to addition. (D)</p> Signup and view all the answers

What is the result of applying the associative law to $31 + 9 + 6$?

<p>46 (B)</p> Signup and view all the answers

When applying the associative property to multiplication, what is $6 × (4 × 3)$ equivalent to?

<p>$(6 × 4) × 3$ (A), $(6 × 3) × 4$ (C)</p> Signup and view all the answers

Which property states that the order of numbers does not affect their sum or product?

<p>Commutative Property (D)</p> Signup and view all the answers

The sum of 10 + 20 is the same as 20 + 10.

<p>True (A)</p> Signup and view all the answers

Define the associative property in your own words.

<p>The associative property states that the way numbers are grouped does not affect their sum or product.</p> Signup and view all the answers

The commutative property applies to both addition and __________.

<p>multiplication</p> Signup and view all the answers

Match the following operations with their associated properties:

<p>3 + 5 = 5 + 3 = Commutative Property (2 + 3) + 4 = 2 + (3 + 4) = Associative Property 5 × (2 + 3) = 5 × 2 + 5 × 3 = Distributive Property 4 + 0 = 4 = Identity Property</p> Signup and view all the answers

If you arrange the numbers 8, 4, and 2 for addition in the order of 4 + 2 + 8, which property are you demonstrating?

<p>Commutative Property (A)</p> Signup and view all the answers

The associative property only applies to addition.

<p>False (B)</p> Signup and view all the answers

Calculate the result of $3 + (4 + 5)$ and also calculate $(3 + 4) + 5$ to demonstrate the associative property.

<p>$12$</p> Signup and view all the answers

In the statement $3(4 + 5)$, the __________ property allows us to distribute 3 across (4 + 5).

<p>distributive</p> Signup and view all the answers

Which of the following statements correctly describes the associative property?

<p>Grouping of numbers does not impact the sum or product. (D)</p> Signup and view all the answers

The commutative property applies only to addition and not to multiplication.

<p>False (B)</p> Signup and view all the answers

What is the result of applying the associative law to the expression $9 + (17 + 39)$?

<p>65</p> Signup and view all the answers

In the equation $2 × (3 × 4)$, applying the associative property results in _____ × 4.

<p>6</p> Signup and view all the answers

Match the property to its definition:

<p>Commutative Property = Order of numbers can change and still yield the same result. Associative Property = Grouping of numbers does not affect the sum or product. Distributive Property = Expanding a multiplication over addition or subtraction.</p> Signup and view all the answers

Using the distributive property, what is $5(2 + 3)$ equivalent to?

<p>$5 × 2 + 5 × 3$ (C)</p> Signup and view all the answers

The expression $4 × 5 × 9$ is equal to $5 × 9 × 4$ according to the commutative property.

<p>True (A)</p> Signup and view all the answers

What is the result of applying the associative law to the expression $2 × 3 × 4$?

<p>24</p> Signup and view all the answers

The expression $9 + (3 + 5)$ can be rewritten as $(____ + 3) + 5$.

<p>9</p> Signup and view all the answers

Which equation illustrates the commutative property with multiplication?

<p>$3 × 4 = 4 × 3$ (A)</p> Signup and view all the answers

Flashcards

Commutative Property of Addition

The order of numbers in addition does not change the sum.

Commutative Property of Multiplication

The order of numbers in multiplication does not change the product.

Commutative Property Example

3 + 5 = 5 + 3 and 3 x 5 = 5 x 3

Associative Property (implied)

The grouping of numbers in addition or multiplication does not change the result.

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Example of Commutative Property

Adding 25 + 28 + 15 in the order of 15+28+25 gives the same sum as 25+28+15.

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Mental Calculation Example

Calculating math problems in your head by applying calculation strategies.

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Addition Calculation

The result after summing numbers.

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Multiplication Calculation

The result after multiplying numbers.

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Commutative Law of Multiplication

Changing the order of factors in a multiplication problem does not change the product.

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Associative Law of Addition

When adding three or more numbers, the sum is the same regardless of how the numbers are grouped.

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Associative Law of Multiplication

When multiplying three or more numbers, the product is the same regardless of how the numbers are grouped.

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Associative Property

The way numbers are grouped (in parentheses) does not change the result of the operation (addition or multiplication).

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Apply Commutative Law

Rearrange the order of numbers in a multiplication expression to make the calculation easier.

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Apply Associative Law

Change the grouping of numbers in an addition or multiplication expression to simplify the calculation.

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Mental Calculations (Commutative/Associative Law)

Using mental math strategies based on commutative and associative laws to simplify and speed up calculations.

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Distributive Property

Multiplying a number by a sum or difference is equivalent to distributing the multiplication to each term.

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Commutative Property

The order of numbers in addition or multiplication doesn't affect the result. You can swap them around.

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Addition: Commutative

Adding numbers in any order gives the same sum. Example: 3 + 5 = 5 + 3

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Multiplication: Commutative

Multiplying numbers in any order gives the same product. Example: 3 x 5 = 5 x 3

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Mental Calculations

Using strategies like the commutative property to do math in your head easily.

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Addition: Associative

Grouping numbers in addition doesn't affect the sum. Example: (3 + 5) + 2 = 3 + (5 + 2)

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Multiplication: Associative

Grouping numbers in multiplication doesn't affect the product. Example: (3 x 5) x 2 = 3 x (5 x 2)

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Distributive Property Example

3 x (2 + 4) = (3 x 2) + (3 x 4)

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Apply Commutative Law in Multiplication

Change the order of numbers being multiplied to make mental calculations easier.

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Apply Associative Law in Addition

Regroup numbers in addition to make mental calculations easier.

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Apply Associative Law in Multiplication

Regroup numbers in multiplication to make mental calculations easier.

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Mental Calculation Strategy

Using the commutative and associative properties to simplify calculations and solve problems mentally.

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Example of Associative Law in Addition

(3 + 4) + 5 = 3 + (4 + 5)

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Example of Associative Law in Multiplication

6 × (4 × 3) = (6 × 4) × 3

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Example of Distributive Property

3 × (2 + 4) = 3 × 2 + 3 × 4

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Study Notes

Arithmetic Laws - Lesson 1

  • Arithmetic laws are used to simplify calculations.
  • Three main properties: Commutative, Associative, and Distributive.

Commutative Property

  • Changing the order of numbers in an addition or multiplication problem doesn't change the result.
  • Example: 3 + 5 = 5 + 3 = 8
  • Example: 3 x 5 = 5 x 3 = 15

Associative Property

  • Changing the grouping of numbers in an addition or multiplication problem doesn't change the result.
  • Example: (3 + 4) + 5 = 3 + (4 + 5) = 12
  • Example: (3 x 4) x 5 = 3 x (4 x 5) = 60

Distributive Property

  • Distributes multiplication over addition or subtraction.
  • Example: a x (b + c) = (a x b) + (a x c)
  • Example: a x (b - c) = (a x b) - (a x c).
  • Real-world Application:
  • A person buys two, 2-packs of cookies at 2each,andtwo,3−packsofcookiesat2 each, and two, 3-packs of cookies at 2each,andtwo,3−packsofcookiesat3 each. What's the total cost? 2 x (2 + 2 x 3). 2 x 2 + 2 x 2 x 3 = 4 + 12 = 16.

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Related Documents

Arithmetic Laws PDF

Description

This quiz covers the fundamental arithmetic laws that simplify calculations, including the Commutative, Associative, and Distributive properties. Test your understanding of these properties with examples and real-world applications to see how they operate in math problems.

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