If a = 0.421 a=0.421 and b = 54.3 b=54.3 b = 54.3 complete the operation below: a + a + b a+a+b a + a + b

This problem asks us if A is equal to 0.421, B is equal to 54.3, then we're asked to complete the operation below, which is A plus A plus B. So what I need to do is take the A's and replace them with the 0.421. So we have 0.421 plus 0.421, and then we have plus B, which is 54.3. So all I need to do is add these decimal values, which I can do by lining up the decimal points. So you're going to get 0.421 plus 0.421 plus 54.3. Now remember, I need to add zeros where I see them to make sure everything's aligned. So I can insert zeros and then I just add from right to left. 1 + 1 + 0 is 22 + 2 is 4. Then we have 4 + 4 plus 34 + 4 is 8 plus 3 that gives us 11, so we'll have to carry a 1. And then we have 4 plus 0 + 0 plus 1, which is 5, and then we have 5 plus 20s, which just gives us 5. Then I can bring down that decimal point, giving us 55.142 as the answer to this problem.

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1. Whole Numbers1h 55m

Multiplying Whole Numbers
46m

Dividing Whole Numbers
21m

Long Division
36m

Exponents
10m

2. Integers1h 7m

Introduction to Integers
16m

Multiplying Integers
24m

Exponential Expressions
10m

Dividing Integers
16m

3. Introduction to Solving Equations and Problem Solving1h 11m

Simplifying Expressions
13m

Translating Word Phrases to Algebraic Expressions
6m

Introduction to Solving Equations
41m

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9m

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Intro To Fractions and Mixed Numbers
44m

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Introduction to Decimals
26m

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12m

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41m

6. Ratio, Proportion, and Percent2h 1m

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17m

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41m

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30m

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1h 14m

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43m

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57m

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6m

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5. Decimals

Adding And Subtracting Decimals

Prealgebra & Beginning Algebra

5. Decimals

Adding And Subtracting Decimals

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Multiple Choice

If $a equals 0.421$ and $b=54.3$ complete the operation below:
$a+a+b$

$54.721$

$55.042$

$54.421$

$55.142$

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If a=0.421 a=0.421 and b=54.3b=54.3b=54.3 complete the operation below:a+a+ba+a+ba+a+b

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If $a equals 0.421$ and $b=54.3$ complete the operation below:
$a+a+b$