Problem: Decimal Word Problems
The task involves solving decimal word problems using addition, subtraction, multiplication, or division. Below are the solutions to each problem with detailed explanations.
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Problem 1:
Question: Each student in the class gets a set of school supplies. They get a pencil costing $0.10, a pen costing $0.17, an eraser costing $0.06, and a ruler costing $0.08. How much does the set cost for each student?
Solution:
To find the total cost of the set for each student, we need to add the costs of all the items together:
\[
\text{Total cost} = \text{Cost of pencil} + \text{Cost of pen} + \text{Cost of eraser} + \text{Cost of ruler}
\]
\[
\text{Total cost} = 0.10 + 0.17 + 0.06 + 0.08
\]
Perform the addition step-by-step:
\[
0.10 + 0.17 = 0.27
\]
\[
0.27 + 0.06 = 0.33
\]
\[
0.33 + 0.08 = 0.41
\]
Thus, the total cost for each student is:
\[
\boxed{0.41}
\]
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Problem 2:
Question: The sugar bowl has 0.2 kg of sugar in it. If you can get 10 spoons out of a bowl, how much sugar is in each spoon?
Solution:
To find the amount of sugar in each spoon, we need to divide the total amount of sugar by the number of spoons:
\[
\text{Sugar per spoon} = \frac{\text{Total sugar}}{\text{Number of spoons}}
\]
\[
\text{Sugar per spoon} = \frac{0.2}{10}
\]
Perform the division:
\[
0.2 \div 10 = 0.02
\]
Thus, the amount of sugar in each spoon is:
\[
\boxed{0.02}
\]
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Problem 3:
Question: A container is filled up with 0.8 L of water. If you drank 0.09 L of water from the container, how much would be left over?
Solution:
To find the remaining amount of water in the container, we need to subtract the amount of water drunk from the total amount of water:
\[
\text{Remaining water} = \text{Total water} - \text{Water drunk}
\]
\[
\text{Remaining water} = 0.8 - 0.09
\]
Perform the subtraction:
\[
0.8 - 0.09 = 0.71
\]
Thus, the remaining amount of water is:
\[
\boxed{0.71}
\]
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Problem 4:
Question: Each strawberry in a box costs $0.15. How much would a box of 25 strawberries cost?
Solution:
To find the total cost of a box of 25 strawberries, we need to multiply the cost of one strawberry by the number of strawberries:
\[
\text{Total cost} = \text{Cost per strawberry} \times \text{Number of strawberries}
\]
\[
\text{Total cost} = 0.15 \times 25
\]
Perform the multiplication:
\[
0.15 \times 25 = 3.75
\]
Thus, the total cost of a box of 25 strawberries is:
\[
\boxed{3.75}
\]
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Final Answers:
1. \(\boxed{0.41}\)
2. \(\boxed{0.02}\)
3. \(\boxed{0.71}\)
4. \(\boxed{3.75}\)
Parent Tip: Review the logic above to help your child master the concept of decimal word problem worksheet.
