Subtract Three Units from 73: Basic Arithmetic Operation

Subtraction with Two-Digit Numbers

Subtract three units from the number 73. What is the result?

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Step-by-step written solution

Follow each step carefully to understand the complete solution
1

Understand the problem

Subtract three units from the number 73. What is the result?

2

Step-by-step solution

To solve this simple subtraction problem, let's follow the steps:
Step 1: Identify the numbers involved, which are 7373 and 33.
Step 2: Apply the operation of subtraction to these numbers. The problem asks us to subtract 33 from 7373, resulting in the mathematical operation 73373 - 3.
Step 3: Calculate the result of the subtraction: 733=7073 - 3 = 70.

Therefore, the result of subtracting three units from the number 73 is 7070.

3

Final Answer

70 70

Key Points to Remember

Essential concepts to master this topic
  • Rule: Subtraction means taking away one number from another
  • Technique: Start with 73 and count back 3 units: 73 - 3
  • Check: Add result to subtrahend: 70 + 3 = 73 ✓

Common Mistakes

Avoid these frequent errors
  • Adding instead of subtracting
    Don't add when the problem says subtract = 73 + 3 = 76 instead of 70! This happens when students see numbers and automatically add. Always read the operation word carefully: 'subtract from' means take away.

Practice Quiz

Test your knowledge with interactive questions

If we have 85 blocks in total, how many blocks will remain if we remove 4 tens and 1 one?

FAQ

Everything you need to know about this question

What does 'subtract three units from 73' mean?

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It means to take away 3 from the number 73. Think of it like having 73 items and removing 3 of them. The mathematical expression is 733 73 - 3 .

Why is the answer 70 and not 76?

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Because we're subtracting (taking away), not adding! When you subtract 3 from 73, you get a smaller number. If you got 76, you accidentally added instead.

How can I check if my subtraction is correct?

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Add your answer to the number you subtracted. If you get back to the original number, you're right! Check: 70+3=73 70 + 3 = 73

Is there a pattern when subtracting single digits?

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Yes! When subtracting a single digit from the ones place, only the ones digit changes. 733 73 - 3 changes the 3 to 0, keeping the 7 in tens place.

What if I need to subtract a bigger number?

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The same rule applies! Just make sure the number you're subtracting from is larger than the number you're taking away, so you don't get negative results.

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