The 4 Operations of Decimals Word Problems — The Davidson Group - Free Printable

Let's solve each problem step by step.

---

Problem 1:

In a high jump event, Cameron cleared 2.5 m and Jordan cleared 1.4 m. Find the difference between the two results.

#### Solution:
To find the difference between the two results, subtract Jordan's height from Cameron's height:
\[
2.5 \, \text{m} - 1.4 \, \text{m} = 1.1 \, \text{m}
\]

#### Answer:
\[
\boxed{1.1 \, \text{m}}
\]

---

Problem 2:

A worker mixed 13.21 lb of cement with sand. The weight of sand used was 3 times the weight of the cement. How many pounds of sand did he use?

#### Solution:
The weight of the sand is given as 3 times the weight of the cement. The weight of the cement is 13.21 lb. Therefore:
\[
\text{Weight of sand} = 3 \times 13.21 \, \text{lb}
\]
Calculate the product:
\[
3 \times 13.21 = 39.63 \, \text{lb}
\]

#### Answer:
\[
\boxed{39.63 \, \text{lb}}
\]

---

Problem 3:

Mrs. Lee bought 4 packets of spices and a can of cocoa. Each packet of spices costs $0.20 and the can of cocoa costs $3.10. How much did she spend altogether?

#### Solution:
First, calculate the total cost of the spices:
\[
\text{Cost of spices} = 4 \times 0.20 = 0.80 \, \text{dollars}
\]
Next, add the cost of the can of cocoa:
\[
\text{Total cost} = \text{Cost of spices} + \text{Cost of cocoa} = 0.80 + 3.10 = 3.90 \, \text{dollars}
\]

#### Answer:
\[
\boxed{3.90 \, \text{dollars}}
\]

---

Problem 4:

A painter mixed 1.5 liters of black paint with 0.4 liters of white paint to get gray paint. Then he used 0.89 liters of the gray paint. How much gray paint did he have left?

#### Solution:
First, calculate the total amount of gray paint initially mixed:
\[
\text{Total gray paint} = 1.5 \, \text{liters} + 0.4 \, \text{liters} = 1.9 \, \text{liters}
\]
Next, subtract the amount of gray paint used:
\[
\text{Gray paint left} = 1.9 \, \text{liters} - 0.89 \, \text{liters} = 1.01 \, \text{liters}
\]

#### Answer:
\[
\boxed{1.01 \, \text{liters}}
\]

---

Problem 5:

Mrs. Bates bought 5 pots of plant. Each pot of plant cost $1.10. She gave the cashier $10. How much change did she receive?

#### Solution:
First, calculate the total cost of the 5 pots of plants:
\[
\text{Total cost} = 5 \times 1.10 = 5.50 \, \text{dollars}
\]
Next, subtract the total cost from the amount Mrs. Bates gave to the cashier:
\[
\text{Change received} = 10.00 - 5.50 = 4.50 \, \text{dollars}
\]

#### Answer:
\[
\boxed{4.50 \, \text{dollars}}
\]

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Final Answers:

1. \(\boxed{1.1 \, \text{m}}\)
2. \(\boxed{39.63 \, \text{lb}}\)
3. \(\boxed{3.90 \, \text{dollars}}\)
4. \(\boxed{1.01 \, \text{liters}}\)
5. \(\boxed{4.50 \, \text{dollars}}\)