Chapter 2: Q7. (page 108)

Evaluate the expression. Justify each of your steps.
$4.7 + 2.5 + 2.3$

Short Answer

Expert verified

Value of given expression is $9.5$ .

Step by step solution

Step-1- Concept of commutative property and associative property of addition

The commutative property is a math rule says thatthe order in which we add numbers does not change the final product.

$A + B = B + A$

The associative property of addition statesthat the addition of three or more numbers remains the same regardless ofhow the numbers are grouped,

$A + (B + C) = (A + B) + C$ .

Step-2-Evaluating given expression

$4.7 + 2.5 + 2.3$

Using order of operation,

$4.7 + 2.5 + 2.3 = (4.7 + 2.5) + 2.3$ .

Using Commutative property,

$4.7 + 2.5 + 2.3 = (2.5 + 4.7) + 2.3$ .

Using associative property,

$\begin{array}{l} 4.7 + 2.5 + 2.3 = 2.5 + (4.7 + 2.3) \\ 4.7 + 2.5 + 2.3 = 2.5 + (7) \\ 4.7 + 2.5 + 2.3 = 9.5 \end{array}$

Step-3-Conclusion

Therefore, the value of given expression is $9.5$ .

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Evaluate the expression. Justify each of your steps.
$4.7 + 2.5 + 2.3$

Short Answer

Step by step solution

Step-1- Concept of commutative property and associative property of addition

Step-2-Evaluating given expression

Step-3-Conclusion

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Evaluate the expression. Justify each of your steps.4.7+2.5+2.3

Short Answer

Step by step solution

Step-1- Concept of commutative property and associative property of addition

Step-2-Evaluating given expression

Step-3-Conclusion

One App. One Place for Learning.

Most popular questions from this chapter

Recommended explanations on Math Textbooks

Calculus

Theoretical and Mathematical Physics

Decision Maths

Discrete Mathematics

Probability and Statistics

Statistics

Study anywhere. Anytime. Across all devices.

Evaluate the expression. Justify each of your steps.
$4.7 + 2.5 + 2.3$