Madeline estimated the product of 3.56 and 8.3 below. (3.56) (8.3) almost-equals 4 times 9 = 36 How does the estimate compare to the exact product? The estimate is high because both factors are rounded down. The estimate is low because both factors are rounded down. The estimate is high because both factors are rounded up. The estimate is low because both factors are rounded up.
Answers
Answer:
Madeline estimated the product of 3.56 and 8.3 below. (3.56)(8.3)=4*9=36 How does the estimate compare to the exact product? 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. Gasoline costs 3.65agallon.Whichisanestimatedcostof14.2gallonsofgasoline?A.18 B.30C.40 D.56Stuislayingbrickdowntomakeapatio.Heplansforthepatiotobe12.5feetby18.3feet.Heordersenoughbrickfor247squarefeet.Whichstatementabouttheamountofbrickiscorrect?A.Stuestimatedcorrectlybyroundingup.Heorderedenoughbrick.Theexactareais228.75squarefeet.B.Stuestimatedcorrectlybyroundingdown.Heorderedenoughbrick.Theexactareais228.75squarefeet.C.Studidnotestimatecorrectlybyroundingup.Hedidnotorderenoughbrick.Theexactareais228.75squarefeet.D.Studidnotestimatecorrectlybyroundingdown.Hedidnotorderenoughbrick.Theexactareais228.75squarefeet.Velvetfabriccosts11.49 a yard. Yvette buys 9.3 yards. Yvettes estimated cost of the velvet is A.20.B.99. C.104.D.120. Eoin plans to purchase 6.50 pounds of cheese that costs 4.75perpound.Heusedthefollowingstepstoestimatethecost.Step1:Round6.50poundsupto7.Step2:Round4.75 up to 5.00.Step3:Multiply5by7toget35.Step4:Concludethatthecostwillbejustover35.00. 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.Instep3,hechosethewrongoperationtocalculatecost.D.Instep4,heshouldhaveconcludedthecostwouldbeunder35.00 Round steak costs 6.95perpound.Sarawantstobuy9.5poundsofroundsteakwhichsheestimateswillcost54. Which statement about Saras estimate is true? A.Sarah rounded 6.95and9.5up.54 is enough money to buy the steak. B.Sarah incorrectly multiplied 9 and 6. Her estimate should be 63.C.Sarahrounded9.5upto10.Herestimateof54 is too high. D.Sarah rounded 6.95and9.5down.Herestimateof54 is too low. Manuel buys 7.9 pounds of strawberries. Each pound costs 3.89.Whichexpressiongivesthebestestimateofthecostofthestrawberries?A.(8)(4) B.(7)(4)C.(8)(3) D.(7)($3) 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.
Step-by-step explanation:
The estimate is high because both factors are rounded up. Statement III is the correct option.
- Madeline estimated the product of 3.56 and 8.3 is almost equal to 4 and 9 =36.
- The actual value of the product of 3.56 and 8.3 is 29.548, The original value is less than the estimated value. Hence, the estimate is high.
- The value 3.56 is rounded to the next integer i.e 4, The value 8.3 is rounded to the next integer i.e 9. Hence, both the integers are rounded to their next integers. Hence, both the integers are rounded up.
- Hence, the estimated value (36) is higher than the original value (29.548) and both the integers (3.56, 8.3) are rounded up (4, 9).
Hence, option C is the correct answer.