Math worksheet with addition and subtraction word problems for students.

Problem Analysis and Solution

The worksheet involves solving word problems using addition and subtraction. Let's solve each problem step by step.

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#### Problem 1:
Question:
49 fourth graders, 35 fifth graders, and 76 sixth graders showed up for soccer practice. How many students were there in total?

Solution:
To find the total number of students, we need to add the number of students from each grade:
\[
49 + 35 + 76
\]

- First, add 49 and 35:
\[
49 + 35 = 84
\]

- Next, add 84 and 76:
\[
84 + 76 = 160
\]

So, the total number of students is:
\[
\boxed{160}
\]

Operation: Add

---

#### Problem 2:
Question:
A large tanker truck can hold up to 11,256 gallons of oil. If the truck already contains 9,365 gallons of oil, how many more gallons of oil will be required to fill the tanker?

Solution:
To find out how many more gallons are needed to fill the tanker, we subtract the amount of oil already in the truck from the truck's total capacity:
\[
11,256 - 9,365
\]

- Perform the subtraction:
\[
11,256 - 9,365 = 1,891
\]

So, the number of additional gallons needed is:
\[
\boxed{1891}
\]

Operation: Subtract

---

#### Problem 3:
Question:
In the year 2014, 835,478 participants took part in the New York City Marathon. The race had 50,386 finishers. How many participants were unable to complete the marathon?

Solution:
To find the number of participants who did not complete the marathon, we subtract the number of finishers from the total number of participants:
\[
835,478 - 50,386
\]

- Perform the subtraction:
\[
835,478 - 50,386 = 785,092
\]

So, the number of participants who were unable to complete the marathon is:
\[
\boxed{785092}
\]

Operation: Subtract

---

#### Problem 4:
Question:
In the 2015 Chicago Marathon, 20,144 male participants and 17,038 female participants completed the race. How many runners in all completed the marathon?

Solution:
To find the total number of runners who completed the marathon, we add the number of male and female participants:
\[
20,144 + 17,038
\]

- Perform the addition:
\[
20,144 + 17,038 = 37,182
\]

So, the total number of runners who completed the marathon is:
\[
\boxed{37182}
\]

Operation: Add

---

#### Problem 5:
Question:
The average weight of an Asian elephant is 11,950 pounds and that of an African elephant is 13,220 pounds. What is the difference in weight?

Solution:
To find the difference in weight between the two types of elephants, we subtract the weight of the Asian elephant from the weight of the African elephant:
\[
13,220 - 11,950
\]

- Perform the subtraction:
\[
13,220 - 11,950 = 1,270
\]

So, the difference in weight is:
\[
\boxed{1270}
\]

Operation: Subtract

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Final Answers:

1. Total students: \( \boxed{160} \) (Add)
2. Additional gallons needed: \( \boxed{1891} \) (Subtract)
3. Participants unable to complete the marathon: \( \boxed{785092} \) (Subtract)
4. Total runners who completed the marathon: \( \boxed{37182} \) (Add)
5. Difference in weight: \( \boxed{1270} \) (Subtract)

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Summary:

- Addition Problems: 1, 4
- Subtraction Problems: 2, 3, 5

Each problem has been solved with clear reasoning and calculations.