Question

Rashida wrote these steps to find the estimated difference between 85 and 46:

Step 1: 85 rounded to the nearest ten is 80.
Step 2: 46 rounded to the nearest ten is 50.
Step 3: The term "difference" means "to subtract."
Step 4: The estimated difference between 85 and 46 is 80 – 50 = 30. In what step did her first error occur?

a) Step 1
b) Step 2
c) Step 3
d) Step 4

Answer 1

Rashida's first error occurred in Step 2 when rounding 46 to the nearest ten.

Step-by-step explanation:

The first error occurred in Step 2: 46 rounded to the nearest ten is 50.

Rashida made a mistake in rounding 46 to the nearest ten. The correct rounding would be 50. Since the estimated difference is calculated by subtracting the rounded numbers, using 50 instead of 46 will result in an incorrect estimation.