The following question has two parts. First, answer part A. Then, answer part B.
In math class, Alyssa's average test score is 90.125.
Part A
What is 90.125 written in expanded form?
(1 point)
Responses
9×10+1×1+2×110+5×1100
9 × 10 + 1 × 1 + 2 × 1 10 + 5 × 1 100
9×1+1×110+2×1100+5×11,000
9 × 1 + 1 × 1 10 + 2 × 1 100 + 5 × 1 1 , 000
9×10+1×110+2×1100+5×11,000
9 × 10 + 1 × 1 10 + 2 × 1 100 + 5 × 1 1 , 000
9×1+1×1100+2×11,000+5×110,000
9 × 1 + 1 × 1 100 + 2 × 1 1 , 000 + 5 × 1 10 , 000
The correct answer for part A is: 9×10+1×1+2×110+5×1100
Part B
Using the expanded form from part A, what is Alyssa's average test score?
To find Alyssa's average test score, we need to evaluate the expression in the expanded form of 90.125.
9×10+1×1+2×110+5×1100
= 90 + 1 + 220 + 5500
= 5811
Therefore, Alyssa's average test score is 5811.
Part A: The expanded form of 90.125 is 9 × 10 + 0 × 1 + 1 × 0.1 + 2 × 0.01 + 5 × 0.001.
Part B: The expanded form of 90.125 can also be written as 9 × 10 + 0 × 1 + 1 × 0.1 + 2 × 0.01 + 5 × 0.001.