5th Math Unit 1 Review Name: Date: displayed publicly. Page: (1 of 9 )
Q 1. A rectangle has a length of 0.628 feet and a width of feet. Write the width of the rectangle in decimal form. Write the decimal width of the rectangle in expanded form. What is the length of the rectangle, rounded to the nearest hundredth? Explain your answer. The area of the rectangle is approximately 0.085 square feet. Why is the value of the area of the rectangle less than the value of the length? Explain your answer. Q 2. Use what you know about rounding to answer Parts A, B, and C. Round 2.097 to the nearest whole number. Explain your answer. Round 15.0974 to the nearest hundredth. Explain your answer. Two processes for estimating the expression number are listed below. to the nearest whole Process 1: Round 6.6 to 7 and round 1.3 to 1, and then subtract. Process 2: Subtract 1.3 from 6.6, and then round the final answer. Justify which process should be used to estimate Explain your answer. displayed publicly. Page: (2 of 9 )
Q 3. The table shows the number of Earth years it takes the five inner planets of our solar system to orbit the sun. How many more Earth years does it take Mars to make one orbit around the sun than it takes Venus? Show your work. There are 365 Earth days in 1 Earth year. How many Earth days does it take Jupiter to make one orbit around the sun? Round your answer to the nearest whole number. Show your work. The expression below shows how to find the total number of Earth years it takes Mercury to orbit 100 times around the sun. What is the value of the expression? Show your work. displayed publicly. Page: (3 of 9 )
Q 4. The table shows the times of the top four finishers in the 5 th grade obstacle course at an elementary school. They are listed in alphabetical order. Using one of the symbols, time. Explain your answer. Write Enrico's time in expanded form. compare Glenda's time with Sheryl's Explain whether or not parentheses need to be placed around any of the numbers you wrote in. Q 5. Irma has $31.84 to buy two of the four items listed. $15.96 toy displayed publicly. Page: (4 of 9 )
$17.08 shirt $16.13 book $15.68 flowers What is one possible combination of two items Irma can buy? Q 6. The table shows the distances five students each ran in 10 seconds. Which student ran the farthest distance? Q 7. Round each number shown in the list to the nearest hundredth. displayed publicly. Page: (5 of 9 )
What is the sum of the rounded numbers in the list? Q 8. The table shows the average number of DVDs rented during last month at a store based on the day of the week. displayed publicly. Page: (6 of 9 )
Alonzo stated that the average number of DVDs rented on Friday was about 10 times the average number rented on Tuesday. Explain whether or not Alonzo's statement is correct. Q 9. Write the phrase shown using only numbers and symbols. "Five times the difference of seven less than twelve" Q 10. Which statement correctly rounds a decimal to the nearest hundredth? A)The number 0.4737 rounds to 0.48. B)The number 0.5261 rounds to 0.53. C)The number 0.6429 rounds to 0.643. D)The number 0.7813 rounds to 0.782. Q 11. The lengths of four rhinoceroses, or rhinos, are shown in the chart. displayed publicly. Page: (7 of 9 )
Which rhino is the longest? Which is the shortest? A 5 th rhino is longer than the shortest one from the chart, but not as long as the longest rhino. What could be the length of the 5 th rhino? Explain your answer. Round each value in the chart to the nearest tenth. Mark said that if all 4 rhinos stood end to end they would be more than 15 meters in length. Is Mark correct? Explain your answer. Part D How is the value of the 8 in the number 3.528 different from the value of the 8 in the number 3.68? Use what you know about place value to explain your answer. Q 12. Two number patterns are shown in the table. displayed publicly. Page: (8 of 9 )
Find the difference between the fourth term of Pattern P and the fourth term of Pattern Q. Show your work or explain your answer. One of the terms of Pattern P is 355. Use what you know about place value to explain the relationship between the values of the two 5s in 355. Which term in both patterns is the same number? Explain how you found your answer or show your work. displayed publicly. Page: (9 of 9 )