Subtract from 49 Shekels: Calculate Remaining Money After Rice Purchase

Subtraction with Real-World Context

Here is a price list of products at the grocery store:

MilkBreadRiceFlourSugarSalt697432Dana has 49 shekels. She buys some rice. How much money does she have left?

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Step-by-step written solution

Follow each step carefully to understand the complete solution
1

Understand the problem

Here is a price list of products at the grocery store:

MilkBreadRiceFlourSugarSalt697432Dana has 49 shekels. She buys some rice. How much money does she have left?

2

Step-by-step solution

To solve the problem, let's follow these steps:

  • Step 1: Identify the given amounts
  • Step 2: Perform subtraction to find out how much money is left

Step 1: Dana initially has 49 shekels. The cost of the rice she wants to buy is 7 shekels.

Step 2: To find out how much money Dana will have left after buying the rice, we subtract the cost of rice from her initial money:

497=42 49 - 7 = 42

This calculation shows that Dana will have 42 shekels remaining after purchasing the rice. Therefore, the solution is:

42 42 .

3

Final Answer

42 42

Key Points to Remember

Essential concepts to master this topic
  • Reading Comprehension: Extract given information and identify the required operation
  • Technique: Subtract item cost from total money: 49 - 7 = 42
  • Check: Add remaining money to spent amount: 42 + 7 = 49 ✓

Common Mistakes

Avoid these frequent errors
  • Adding instead of subtracting when finding remaining money
    Don't add the rice cost to the initial amount: 49 + 7 = 56! This gives more money than Dana started with, which is impossible. Always subtract the cost from the initial amount to find what's left.

Practice Quiz

Test your knowledge with interactive questions

If we have 67 blocks in total, how many blocks will remain if we remove 5 tens and 4 ones?

FAQ

Everything you need to know about this question

Why do I subtract instead of add to find how much money is left?

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When you spend money, the amount you have decreases. Subtraction shows this decrease: starting amount minus what you spent equals what remains.

How do I know which number from the price list to use?

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Look for the specific item mentioned in the problem. Dana buys rice, so find rice on the list and use its price of 7 7 shekels.

What if the problem asked how much Dana spent in total?

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Then you would need to add up all the prices of items she bought. But this problem only mentions rice, so she spent 7 7 shekels total.

Can I check my answer without doing the reverse operation?

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Yes! Ask yourself: Does my answer make sense? Dana should have less money after buying something, and 42<49 42 < 49 , so it's reasonable.

What if Dana didn't have enough money for the rice?

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If the rice cost more than 49 49 shekels, she couldn't buy it! Always check that the initial amount is greater than the cost before subtracting.

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