Grade 4 Word Problems | Free Worksheets | Printables - Free Printable

Let's solve each problem step by step.

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Problem 1:

The chicken pen held 7 chickens. Each chicken lay 6 eggs a day. How many eggs would they get altogether after 30 days?

#### Solution:
1. Number of chickens: 7
2. Eggs laid per chicken per day: 6
3. Total eggs laid by all chickens per day:
\( 7 \times 6 = 42 \) eggs per day.
4. Number of days: 30
5. Total eggs laid in 30 days:
\( 42 \times 30 = 1260 \) eggs.

#### Final Answer:
\[
\boxed{1260}
\]

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Problem 2:

Simone cut 4 pieces of wood for her school project. The pieces of wood were 4.2m, 3.5m, 3.7m, and 9.2m. She put them altogether to form one long piece of wood. How long was it?

#### Solution:
1. Lengths of the pieces of wood: 4.2m, 3.5m, 3.7m, 9.2m
2. Total length when combined:
\( 4.2 + 3.5 + 3.7 + 9.2 \)
3. Perform the addition:
\[
4.2 + 3.5 = 7.7
\]
\[
7.7 + 3.7 = 11.4
\]
\[
11.4 + 9.2 = 20.6
\]

#### Final Answer:
\[
\boxed{20.6}
\]

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Problem 3:

Patrick ordered 9 pizzas for his birthday party. Each pizza had 8 slices. There were 12 people (including Patrick) at his party. How many slices did they each get?

#### Solution:
1. Number of pizzas: 9
2. Slices per pizza: 8
3. Total number of slices:
\( 9 \times 8 = 72 \) slices.
4. Number of people: 12
5. Slices per person:
\( \frac{72}{12} = 6 \) slices per person.

#### Final Answer:
\[
\boxed{6}
\]

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Problem 4:

A local car company was able to make 12 cars a week for 4 weeks. They doubled this amount over the next 4 weeks. How many cars did they make after the 8 weeks?

#### Solution:
1. Cars made per week in the first 4 weeks: 12
2. Total cars made in the first 4 weeks:
\( 12 \times 4 = 48 \) cars.
3. Cars made per week in the next 4 weeks:
Since the production doubled, the new rate is \( 12 \times 2 = 24 \) cars per week.
4. Total cars made in the next 4 weeks:
\( 24 \times 4 = 96 \) cars.
5. Total cars made in 8 weeks:
\( 48 + 96 = 144 \) cars.

#### Final Answer:
\[
\boxed{144}
\]

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Final Answers:

1. \(\boxed{1260}\)
2. \(\boxed{20.6}\)
3. \(\boxed{6}\)
4. \(\boxed{144}\)