Practice the questions of McGraw Hill Math Grade 4 Answer Key PDF Chapter 2 Lesson 8 Problem Solving: Rounding to Estimate to secure good marks & knowledge in the exams.
McGraw-Hill Math Grade 4 Answer Key Chapter 2 Lesson 8 Problem Solving: Rounding to Estimate
Solve
Estimate to find the answer.
Question 1.
This week, 16,724 people watched a ball game at a stadium. Last week, 3,296 fewer people watched. About how many people watched a ball game at the stadium last week?
about 14,000 people or 13,400 people
Answer:
Number of people watched a ball game at the stadium last week = 13,428.
Explanation:
Number of people watched a ball game at a stadium = 16,724.
Last week, 3,296 fewer people watched.
=> Number of people watched a ball game at the stadium last week = Number of people watched a ball game at a stadium – 3296
= 16,724 – 3,296
= 13,428.
Question 2.
Joey was born in the year 2009. One of his older cousins was born in 1994. Rounding to the nearest ten, about how many years younger is Joey?
Answer:
15 years younger is Joey.
Explanation:
Year of Joey was born = 2009.
Year of one of his older cousins was born = 1994.
Difference:
Year of Joey was born – Year of one of his older cousins was born
= 2009 – 1994
= 15.
Question 3.
A high school club holds a bake sale to raise money for the band. 96 people came to the sale on Saturday. 145 people came to the sale on Sunday. About how many people came to the bake sale that weekend? Round to the nearest ten.
Answer:
Number of people came to the bake sale that weekend = 241.
Explanation:
Number of people came to the sale on Saturday = 96.
Number of people came to the sale on Sunday = 145.
Number of people came to the bake sale that weekend = Number of people came to the sale on Saturday + Number of people came to the sale on Sunday
= 96 + 145
= 241.
Nearest ten of 241:
250.