It’s time for Spiral Review! This review will help you remember some of the things you have already learned. Take your time and try your best.

Which expression is equivalent to 0.8 x 0.6?
(8 x 10 )x6 x 10)
[8 x 1/10 ] x[6 x 1/100]

[8x 1/100] x [6 x 1/100]
[8 1/10] x [6 x 1/100]

Answer:
Chloe’s parents are buying carpeting for her room. The carpeting they have selected costs $3.28 per square foot. The area of Chloe’s room is 96 square feet. How much will the carpeting cost?
$300.00
$313.68
$314.88
$492.00
Answer:
James bought a bag of dog food that weighs 28.25 pounds. How many pounds would 2.5 bags weigh?
30.75 pounds
56.5 pounds
70 pounds
70.625 pounds
Answer:
The table shows how much Ethan spent for lunch at work each day last week. What is the total amount he spent on his lunches?
Answer:
Day
Amount ($)
Monday
5.25
Tuesday
6.48
Wednesday
4.95
Thursday
7.22
Friday
5.96

Will the actual product of be greater or less than ? Explain.
Answer:

1 answer

Let's break down each question one at a time.

1. Equivalent Expression to 0.8 x 0.6

The multiplication of decimals can be expressed using fractions or whole numbers:

  • \(0.8 = \frac{8}{10} = \frac{4}{5}\)
  • \(0.6 = \frac{6}{10} = \frac{3}{5}\)

Calculating \(0.8 \times 0.6\): \(0.8 \times 0.6 = \frac{8}{10} \times \frac{6}{10} = \frac{48}{100} = 0.48\)

Now, examining which expression from the choices equals \(0.48\):

  • \((8 \times 10) \times (6 \times 10)\) does not simplify correctly,
  • \([8 \times \frac{1}{10}] \times [6 \times \frac{1}{100}] = \frac{8 \times 6}{1000} = \frac{48}{1000}\) which is not correct,
  • \([8 \times \frac{1}{100}] \times [6 \times \frac{1}{100}] = \frac{48}{10000}\) which is not correct,
  • \([8 \times \frac{1}{10}] \times [6 \times \frac{1}{100}] = \frac{48}{1000}\) which is not correct either.

None of the provided expressions appear to be equivalent to \(0.48\). Thus, it seems the equivalence is not represented properly in the choices given.

2. Cost of Carpeting

To find the total cost of carpeting for Chloe's room:

  • Cost per square foot = $3.28
  • Area of the room = 96 square feet

Total cost = Cost per square foot × Area Total cost = $3.28 × 96 = $314.88

So, the answer is $314.88.

3. Weight of 2.5 Bags of Dog Food

To find the total weight:

  • Weight of one bag = 28.25 pounds

Weight of 2.5 bags = 28.25 pounds × 2.5 Weight of 2.5 bags = 70.625 pounds

So, the answer is 70.625 pounds.

4. Total Amount Spent on Lunch

To find the total amount spent by Ethan:

  • Monday: $5.25
  • Tuesday: $6.48
  • Wednesday: $4.95
  • Thursday: $7.22
  • Friday: $5.96

Total spent = $5.25 + $6.48 + $4.95 + $7.22 + $5.96 Total spent = $29.86.

So, the total amount he spent on his lunches is $29.86.

5. Actual Product Comparison

You didn't provide figures to ascertain whether the actual product is greater or lesser, so I can't analyze that part without the numbers. Please provide the product to compare, and I'll be glad to help!

If you have any more questions or need further clarifications, feel free to ask!