The steps to solving the expression the quantity of the sum of seven squared plus three divided by the absolute value of negative 0.5 end quantity minus 18.6 ÷ 6 are listed below.

Part A: Explain what the missing expression should be in Step 4. (6 points)

Part B: Explain what the missing expression should be in Step 6. (6 points)

Step 1 the quantity of the sum of seven squared plus three divided by the absolute value of negative 0.5 end quantity minus 18.6 ÷ 6
Step 2 the quantity of the sum of seven squared plus three divided by 0.5 end quantity minus 18.6 ÷ 6
Step 3 the quantity of the sum of 49 plus three divided by the 0.5 end quantity minus 18.6 ÷ 6
Step 4
Step 5 104 − 18.6 ÷ 6
Step 6
Step 7 100.9

Part A: In Step 4, the missing expression should be the result of the calculation 49 + 3, which is 52. This is because in Step 3, "the quantity of the sum of 49 plus three" is mentioned.

Part B: In Step 6, the missing expression should be the result of the calculation 104 - (18.6 ÷ 6), which is 101.2. This is because in Step 5, "104 - 18.6 ÷ 6" is mentioned.

Part A: In Step 4, the missing expression should be the result of evaluating the numerator of the fraction in the expression.

Step 4: the quantity of the sum of 49 plus three divided by 0.5

Part B: In Step 6, the missing expression should be the result of evaluating the remaining division in the expression.

Step 6: 104 - (18.6 ÷ 6)

Part A: In Step 4, we need to determine the missing expression. Let's start by simplifying the expression in the previous step: the quantity of the sum of 49 plus three divided by the 0.5 end quantity minus 18.6 ÷ 6.

To simplify further, let's perform the calculations inside the quantity first. The sum of 49 plus three is 52. Now, we divide this sum by 0.5. 52 divided by 0.5 equals 104.

So, in Step 4, the missing expression should be 104.

Part B: In Step 6, we need to determine the missing expression. Let's look at the previous step: 104 minus 18.6 ÷ 6.

To simplify this expression, let's start with the division: 18.6 divided by 6 equals 3.1. Now subtract this result from 104: 104 minus 3.1 equals 100.9.

So, in Step 6, the missing expression should be 100.9.