round 3 - subtracting decimals
1. $5.4 - (-1.5) =$
2. $-1.8 - 2.1 =$
3. $-4.9 - (-3.2) =$
4. $6.8 - 9.9 =$
round 3 secret value c:
round 4 - subtracting fractions
1. $-\frac{2}{5} - (-\frac{1}{5}) =$
2. $\frac{1}{9} - (-\frac{4}{9}) =$
3. $-\frac{1}{12} - \frac{7}{12} =$
4. $\frac{1}{2} - \frac{5}{6} =$

Question

Accepted Answer

### Round 3 - Subtracting Decimals
#### 1. $ 5.4 - (-1.5) $
# Explanation:
## Step1: Simplify the double negative
Subtracting a negative is like adding the positive, so $ 5.4 - (-1.5) = 5.4 + 1.5 $
## Step2: Add the decimals
$ 5.4 + 1.5 = 6.9 $
# Answer: $ 6.9 $

#### 2. $ -1.8 - 2.1 $
# Explanation:
## Step1: Combine the negative numbers
Subtracting a positive from a negative is like adding their absolute values and keeping the negative sign, so $ -1.8 - 2.1 = -(1.8 + 2.1) $
## Step2: Add the decimals
$ 1.8 + 2.1 = 3.9 $, so the result is $ -3.9 $
# Answer: $ -3.9 $

#### 3. $ -4.9 - (-3.2) $
# Explanation:
## Step1: Simplify the double negative
$ -4.9 - (-3.2) = -4.9 + 3.2 $
## Step2: Add the numbers (considering signs)
$ -4.9 + 3.2 = -(4.9 - 3.2) = -1.7 $
# Answer: $ -1.7 $

#### 4. $ 6.8 - 9.9 $
# Explanation:
## Step1: Subtract the larger number from the smaller
Since $ 9.9 > 6.8 $, the result will be negative. $ 6.8 - 9.9 = -(9.9 - 6.8) $
## Step2: Subtract the decimals
$ 9.9 - 6.8 = 3.1 $, so the result is $ -3.1 $
# Answer: $ -3.1 $

### Round 4 - Subtracting Fractions
#### 1. $ -\frac{2}{5} - (-\frac{1}{5}) $
# Explanation:
## Step1: Simplify the double negative
$ -\frac{2}{5} - (-\frac{1}{5}) = -\frac{2}{5} + \frac{1}{5} $
## Step2: Add the fractions (same denominator)
$ -\frac{2}{5} + \frac{1}{5} = \frac{-2 + 1}{5} = \frac{-1}{5} = -\frac{1}{5} $
# Answer: $ -\frac{1}{5} $

#### 2. $ \frac{1}{9} - (-\frac{4}{9}) $
# Explanation:
## Step1: Simplify the double negative
$ \frac{1}{9} - (-\frac{4}{9}) = \frac{1}{9} + \frac{4}{9} $
## Step2: Add the fractions (same denominator)
$ \frac{1}{9} + \frac{4}{9} = \frac{1 + 4}{9} = \frac{5}{9} $
# Answer: $ \frac{5}{9} $

#### 3. $ -\frac{1}{12} - \frac{7}{12} $
# Explanation:
## Step1: Combine the negative fractions
$ -\frac{1}{12} - \frac{7}{12} = \frac{-1 - 7}{12} $
## Step2: Subtract the numerators
$ -1 - 7 = -8 $, so $ \frac{-8}{12} = -\frac{2}{3} $ (simplified by dividing numerator and denominator by 4)
# Answer: $ -\frac{2}{3} $

#### 4. $ \frac{1}{2} - \frac{5}{6} $
# Explanation:
## Step1: Find a common denominator (6)
$ \frac{1}{2} = \frac{3}{6} $, so the expression becomes $ \frac{3}{6} - \frac{5}{6} $
## Step2: Subtract the fractions
$ \frac{3}{6} - \frac{5}{6} = \frac{3 - 5}{6} = \frac{-2}{6} = -\frac{1}{3} $ (simplified by dividing numerator and denominator by 2)
# Answer: $ -\frac{1}{3} $

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QUESTION IMAGE

Question

Explanation:

Round 3 - Subtracting Decimals

1. \( 5.4 - (-1.5) \)

Step1: Simplify the double negative

Step2: Add the decimals

Step1: Combine the negative numbers

Step2: Add the decimals

Step1: Simplify the double negative

Step2: Add the numbers (considering signs)

Answer:

2. \( -1.8 - 2.1 \)