Calculate Total Cost: 5 Meals at $43 Each Using Multiplication

Q: Why do I multiply instead of add the numbers?

You multiply because you're buying multiple copies of the same item! Adding 5 + 43 would mean "5 plus 43," but we need "5 groups of 43" which requires multiplication.

Q: What if the numbers were switched - 43 meals at $5 each?

The result would be the same: $ 43 \times 5 = 215 $! Multiplication is commutative, meaning the order doesn't matter for the final answer.

Q: How can I check my multiplication is correct?

Try division: $ 215 ÷ 5 = 43 $ or $ 215 ÷ 43 = 5 $. If you get back your original numbers, your multiplication is right!

Q: What if I don't remember the multiplication table for 5 × 43?

Break it down! $ 5 \times 43 = 5 \times (40 + 3) = (5 \times 40) + (5 \times 3) = 200 + 15 = 215 $. Use distributive property to make it easier!

Q: Why is the dollar sign important in the answer?

The dollar sign shows units! Without it, 215 could mean anything. Always include units in word problems to show what your number represents - dollars, items, people, etc.

Multiplication Applications with Money Calculations

Sonia buys 5 meals.

The price of each meal is $43.

How much does Sonia pay in total?

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Step-by-step video solution

Watch the teacher solve the problem with clear explanations

00:00 How much did Sarah pay for all the meals?

00:03 Price of one meal according to the given data

00:07 We will use long multiplication to calculate

00:14 Each time we'll calculate one multiplication and then place it in the long multiplication

00:44 And this is the solution to the question

Step-by-step written solution

Follow each step carefully to understand the complete solution

Understand the problem

Sonia buys 5 meals.

The price of each meal is $43.

How much does Sonia pay in total?

Step-by-step solution

To solve this problem, we'll calculate the total cost by multiplying the number of meals by the cost of each meal:

Step 1: Identify the given information: Sonia buys 5 meals, and each meal costs 43.
Step 2: Multiply the number of meals by the price per meal to determine the total cost.

Now, let's perform the calculation:
Sonia buys $$ 5$ meals, and each costs $\43 $$ . Therefore, the total cost is:

$\text{Total Cost} = 5 \times 43$

We calculate:

$5 \times 43 = 215$

Therefore, Sonia pays a total of $215 for the 5 meals.

Since the multiple-choice option that matches our solution is choice 2, we confirm that the correct answer is $\215 \)$ .

Final Answer

$215

Key Points to Remember

Essential concepts to master this topic

Rule: Total cost equals number of items times price per item
Technique: Calculate $5 \times 43 = 215$ for 5 meals at $43 each
Check: Verify by dividing total by quantity: $215 ÷ 5 = 43$ ✓

Common Mistakes

Avoid these frequent errors

Adding instead of multiplying quantities and prices
Don't add 5 + 43 = 48! This gives the wrong total cost because you're combining unrelated numbers. Always multiply the number of items by the price per item to find total cost.

Practice Quiz

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FAQ

Everything you need to know about this question

Why do I multiply instead of add the numbers?

You multiply because you're buying multiple copies of the same item! Adding 5 + 43 would mean "5 plus 43," but we need "5 groups of 43" which requires multiplication.

What if the numbers were switched - 43 meals at $5 each?

The result would be the same: $43 \times 5 = 215$ ! Multiplication is commutative, meaning the order doesn't matter for the final answer.

How can I check my multiplication is correct?

Try division: $215 ÷ 5 = 43$ or $215 ÷ 43 = 5$ . If you get back your original numbers, your multiplication is right!

What if I don't remember the multiplication table for 5 × 43?

Break it down! $5 \times 43 = 5 \times (40 + 3) = (5 \times 40) + (5 \times 3) = 200 + 15 = 215$ . Use distributive property to make it easier!

Why is the dollar sign important in the answer?

The dollar sign shows units! Without it, 215 could mean anything. Always include units in word problems to show what your number represents - dollars, items, people, etc.

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