At the grocery store, you buy a carton of milk for $1.95, a loaf of bread for $0.85, and a box of cereal for 92.05. Use mental math to find the total cost of the groceries.

1 answer

To find the total cost of the groceries, let's break it down into smaller parts using mental math. Here are the prices of the items you purchased:

- Milk: $1.95
- Bread: $0.85
- Cereal: $92.05

First, add the prices of the milk and the bread:

1.95+0.85

Consider the whole numbers and the decimal parts separately:

Whole numbers: 1+0=1
Decimal parts: 0.95+0.85

Breaking down the decimal addition:

0.95+0.85=1.80

Now, combine the whole number with the decimal sum:

1+1.80=2.80

Next, add this result to the price of the cereal:

2.80+92.05

Combine the whole numbers first:

2+92=94

Now add the decimal parts:

0.80+0.05=0.85

Combine these results to get the total cost:

94+0.85=94.85

So, the total cost of the groceries is:

94.85