Estimating and rounding word problems are a mix of estimation and rounding techniques. This process will help kids to enhance their guesses in everyday situations. This technique is specially designed for 4th graders to develop their math skills in real-life scenarios, making it easier for them to understand math easily. Below, we have provided six rounding and estimating examples, where we provide some queries based on real life. So we hope kids will like this concept.
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Rounding Word Problem Worksheets For Grade 4
Read More: Rounding to the Nearest 10 Worksheets For Grade 1
Q1. For lunch at school, each class ordered 18 slices of pizza. If there are 20 classes, the school ordered about __________ slices of pizzas.
Ans. Each class ordered 18 slices of pizza. 18 can be rounded number = 20.
= Number of Classes = 20.
= 20 x 20 = 400 slices.
Q2. There are 2,679 elementary school students and 5 elementary schools in the area. In each elementary school, there are about __________ students.
Ans. 2,679 students can be rounded number = 2700 students.
= Number of Elementary Schools = 5.
= Divide the rounded total number of students by the number of schools:
= 2700 / 5 = 540 students.
Q3. Each school bus can take 46 students. 69 school buses can take about _____ students.
Ans. 46 students can be rounded to 50 students.
= 69 buses can be rounded to 70 buses.
= Multiply the rounded number of students per bus by the rounded number of buses:
= 50 x 70 = 3,500 Students
The above questions are based on real-life scenarios, which help kids make good guesses. Let’s take question one: each class ordered 18 slices of pizza, so 18 can be assumed as 20. Now if the given number of classes is 20, so the school order slices for 20 classes are = 20*20 = 400. So the final answer is 400. And the process will be the same for the rest of the questions.
Q4. The school ordered 750 lollipops for the fun fair and used 540 lollipops. There were about _______ lollipops left.
Ans. The school ordered 750 lollipops.
= The school used 540 lollipops. 540 used lollipops can be rounded to 500.
= Subtract the rounded number of lollipops used from the total:
= 750 – 500 = 250 lollipops.
Q5. In 1948, people attended the school’s fun fair. 248 of them are children and about __________ of them are adults.
Ans. 1,948 people attended the fun fair. 1,948 can be rounded to 2,000.
= 248 of them are children. 248 can be rounded number = 250.
= Subtract the number of children from the total number of attendees:
= 2,000 − 250 = 1,750 adults.
Q6. At the fun fair, 2,157 candy flosses were made over 5 days. About _______ candy floss were made each day.
Ans. 2,157 candy floss were made. 2,157 can be rounded to 2,000.
= The candy floss was made over 5 days.
= Divide the rounded number of candy floss by the number of days:
= 2,000 / 5 = 400 candy floss/day.
This rounded and estimating process will help kids make quick decisions in their real lives. In this exercise, we have provided three questions based on real-life scenarios. Let’s take an example: for question four, the school ordered 750 lollipops and used 540. So 540 can be rounded to 500. Now subtract it from the total = 750-500 = 250. So the final answer is 250.
Q7. The animal farm is open 3 days a week. Each week, there were 1,489 visitors. The animal farm had about _______ visitors in a day.
Ans. 1,489 visitors each week. 1,489 rounded number = 1,500.
= The animal farm is open 3 days a week.
= Divide the rounded number of weekly visitors by the number of days:
= 1,500 / 3 = 500 visitors/day.
Q8. The cows on the farm produced 607 liters of fresh milk. The farmer sold 351 liters of milk to his regular customers. There were ________ liters of fresh milk left on the farm.
Ans. The cows produced 607 liters of milk. 607 rounded number = 600.
= The farmer sold 351 liters of milk. 351 rounded number = 350.
= Subtract the rounded amount of milk sold from the rounded total amount produced:
= 600 − 350 = 250 liters.
Q9. Francis feeds his 391 chickens and 57 rabbits every day. Last week, 114 chicks hatched. This week, Francis will feed about _____ chickens.
Ans. Francis feeds 391 chickens every day. 391 rounded number = 400.
= 114 chicks hatched. 114 rounded number = 100.
= Add the rounded number of new chicks to the rounded number of existing chickens:
= 400 + 100 = 500 chickens.
Solving these questions can be a fun activity for kids. Because it is a very simple process that helps kids understand basic math. So let’s take an example: as we can see, Francis feeds 391 chickens every day. So 391 can be assumed to be around 400. and 114 chicks hatched. So 114 can be assumed around 100. The total is 400 400 + 100 = 500. So the final answer is 500.
Q10. The fishermen caught 8 nets full of fish. Each net had 200 small fish. There were about ________ small fish caught by the fisherman.
Ans. Each net had 200 small fish. This is already a round number.
= There were 8 nets. This number is also round.
= Multiply the number of fish per net by the number of nets:
= 200 × 8 = 1,600 fish.
Q11. Sean stumbled on the ground in front of a flock of sheep. She saw 1,000 sheep legs altogether. She stood up and saw about _____ heads of sheep there
Ans. Each sheep has 4 legs.
= Sean saw a total of 1,000 sheep legs.
= Divide the total number of legs by 4:
= 1,000 / 4 = 250 Sheep.
Q12. The farmer harvested 4,152 eggs. He put 10 eggs in each tray. He had harvested about ________ trays of eggs.
Ans. The farmer harvested 4,152 eggs. 4,152 rounded number = 4,200.
= He put 10 eggs in each tray. This number is already a round number.
= Divide the rounded total number of eggs by the number of eggs per tray:
= 4,200 / 10 = 420 trays.
It is not necessary to round every number if the given number is already rounded; in that case, we just need to solve the questions. For better understanding, let’s explain a question among all of them—for question 12, we can see the farmer harvested 4,152 eggs. 4,152 can be assumed around 4200. He put 110 eggs in each tray and as we can see, 110 is already a round number so divide the rounded total number of eggs by the number of eggs per tray. = 4,200/10 = 420 trays. So the final answer is 420.
Q13. In a town, there are 32,750 hybrid vehicles and 78,345 diesel vehicles. There are approximately ________ more diesel vehicles than hybrid vehicles.
Ans. There are 32,750 hybrid vehicles. Round 32,750 to 33,000.
= There are 78,345 diesel vehicles. Round 78,345 to 78,000.
= Subtract the rounded number of hybrid vehicles from the rounded number of diesel vehicles: = 78,000 – 33,000 = 45,000.
Q14. The distance between the two train stations is 279 miles. It takes the train 9 hours to travel from one station to the other. The average speed of the train is about ________ miles per hour.
Ans. The distance between the stations is 279 miles. Round 279 to 280.
= The time taken is 9 hours. Round of 9 is 10.
= Divide the distance by the time to find the average speed:
= 280 / 10 = 28 miles per hour.
Q15. The first shuttle had 82 riders and the second shuttle had 95 riders. There are approximately ________ riders in total.
Ans. The first shuttle had 82 riders. Round 82 to 80.
= The second shuttle had 95 riders. Round 95 to 100.
= Add the rounded numbers of riders:
= 80 + 100 = 180 riders.
In this exercise, questions are a little bit hard, but there is no need to worry about it. Once kids understand the process, then hard questions will become easier for them. For better understanding, let’s understand question 13: As we can see, 32,750 hybrid vehicles can be rounded as -33,000, and 78,345 diesel vehicles can be rounded as 78,000. Now subtract the rounded number of hybrid vehicles from the rounded number of diesel vehicles: = 78,000 – 33,000 = 45,000. So the final answer is 45,000.
Q16. A driver covers 4 routes totaling 3,960 kilometers in a day. Each route is approximately _____ kilometers long.
Ans. The total distance covered is 3,960 kilometers. Round 3,960 to 4,000.
= There are 4 routes. This number is already round.
= Divide the rounded total distance by the number of routes:
= 4,000 / 4 = 1,000 kilometers/route.
Q17. Each ferry holds approximately 275 passengers. With 10 ferries operating in the fleet, there are about ________ passengers in the entire fleet.
Ans. Each ferry holds approximately 275 passengers. Round 275 to 300.
= There are 10 ferries. This number is already round.
= Multiply the rounded number of passengers per ferry by the number of ferries:
= 300 × 10 = 3,000 passengers.
Q18. In the morning, approximately 600 ships depart from the harbor, and 180 of the ships are delayed for over 20 minutes. About ________ ships depart within 20 minutes of the scheduled time.
Ans. Approximately 600 ships depart from the harbor. This number is already around 180 ships delayed for over 20 minutes. This number is also reasonably round.
= Subtract the number of delayed ships from the total number of ships:
= 600 − 180 = 420 ships.
So we hope solving these questions is helpful for kids and can develop good guesses. In this exercise, the process will be the same, so kids have to solve these questions. We also want the kids to perform this exercise by themself without any help. It will boost their confidence and help them in their real-life scenarios.
Rounding and estimating exercises will help kids, especially 4th graders, to build confidence to solve real-life problems. These exercises will help kids in their everyday routine like shopping, planning, and helping kids to make decisions without taking any calculator or any other devices. This concept will develop number sense and make math easy and fun. So we hope this exercise will build confidence in their math abilities and encourage them to handle critical math problems.
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