Estimating and Finding Decimal Products Answers

6 verified answers
1
Free Preview

Which gives the best estimate and the exact product of (5.9)(8.28)?

A
estimate: 40; exact product: 48.852
B
estimate: 48; exact product: 48.852
C
estimate: 400; exact product: 488.52
D
estimate: 480; exact product: 488.52
2
Free Preview

Kerrie is tiling the floor of a kitchen. The kitchen floor measures 11.3 feet by 9.25 feet. She orders enough tiles for 99 square feet. Which statement about the amount of tiles is correct?

A
Kerrie estimated correctly by rounding down. She has enough tile. The exact area is 104.5 square feet.
B
Kerrie estimated correctly by rounding up. She has enough tile. The exact area is 104.5 square feet.
C
Kerrie did not estimate correctly by rounding up. She does not have enough tile. The exact area is 104.5 square feet.
D
Kerrie did not estimate correctly by rounding down. She does not have enough tile. The exact area is 104.5 square feet.
4

Eoin plans to purchase 6.50 pounds of cheese that costs $4.75 per pound. He used the following steps to estimate the cost.Step 1: Round 6.50 pounds up to 7.Step 2: Round $4.75 up to $5.00.Step 3: Multiply 5 by 7 to get 35.Step 4: Conclude that the cost will be just over $35.00. In which step does Eoin make a mistake?

A
In step 1, he should have rounded the weight down to 6 pounds.
B
In step 2, he should have rounded the cost down to $4.00.
C
In step 3, he chose the wrong operation to calculate cost.
D
In step 4, he should have concluded the cost would be under $35.00.
5

Round steak costs $6.95 per pound. Sara wants to buy 9.5 pounds of round steak which she estimates will cost $54. Which statement about Sara’s estimate is true?

A
Sarah rounded $6.95 and 9.5 up. $54 is enough money to buy the steak.
B
Sarah incorrectly multiplied 9 and 6. Her estimate should be $63.
C
Sarah rounded 9.5 up to 10. Her estimate of $54 is too high.
D
Sarah rounded $6.95 and 9.5 down. Her estimate of $54 is too low.
6

Madeline estimated the product of 3.56 and 8.3 below.How does the estimate compare to the exact product?

Question illustration
A
The estimate is high because both factors are rounded down.
B
The estimate is low because both factors are rounded down.
C
The estimate is high because both factors are rounded up.
D
The estimate is low because both factors are rounded up.
9

Stu is laying brick down to make a patio. He plans for the patio to be 12.5 feet by 18.3 feet. He orders enough brick for 247 square feet. Which statement about the amount of brick is correct?

A
Stu estimated correctly by rounding up. He ordered enough brick. The exact area is 228.75 square feet.
B
Stu estimated correctly by rounding down. He ordered enough brick. The exact area is 228.75 square feet.
C
Stu did not estimate correctly by rounding up. He did not order enough brick. The exact area is 228.75 square feet.
D
Stu did not estimate correctly by rounding down. He did not order enough brick. The exact area is 228.75 square feet.

Did you find these answers helpful?