Solve multi-step problems involving multiplication, addition, or subtraction of decimals, mixed decimals, and whole numbers, including money using appropriate problem-solving strat... Solve multi-step problems involving multiplication, addition, or subtraction of decimals, mixed decimals, and whole numbers, including money using appropriate problem-solving strategies and tools.
Understand the Problem
The question is asking for help in solving multi-step mathematical problems that involve the operations of multiplication, addition, and subtraction with decimals, mixed decimals, whole numbers, and money. It highlights the need for appropriate problem-solving strategies and tools to handle such calculations.
Answer
The final answer depends on the specific calculations, following the detailed steps outlined.
Answer for screen readers
The final answer for the complete operation will depend on the specific numbers provided in the question. But following the steps will yield the right answer.
Steps to Solve
- Identify the operations involved
Since we are dealing with multiplication, addition, and subtraction, determine what numbers or expressions need to be calculated and in which order according to the rules of arithmetic (PEMDAS/BODMAS).
- Convert mixed decimals or money formats
If any numbers are in mixed decimal forms or currency (like $3.50), convert them into decimal form for easier calculations. For example, $3.50 remains $3.50.
- Perform multiplication first
Complete any multiplication operations before addition or subtraction. For instance, if we have $2.50 \times 4$, calculate that first.
$$ 2.50 \times 4 = 10.00 $$
- Handle addition next
Add any results obtained from the multiplication to the relevant numbers. For example, if the previous step resulted in $10.00 and you need to add $5.00:
$$ 10.00 + 5.00 = 15.00 $$
- Perform subtraction last
Finally, resolve any subtraction to arrive at the final solution. If you need to subtract $2.00 from the previous total, do:
$$ 15.00 - 2.00 = 13.00 $$
The final answer for the complete operation will depend on the specific numbers provided in the question. But following the steps will yield the right answer.
More Information
When performing operations with decimals, always align the decimal points when adding or subtracting to avoid errors. Calculating correctly in steps helps reduce mistakes.
Tips
- Forgetting to follow the correct order of operations (PEMDAS/BODMAS).
- Misaligning decimal points when adding or subtracting.
- Not converting mixed decimals or money properly before calculations.
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