Find the Missing Operator: Solving 7?7=0

Choose the correct sign (?):

7?7=0 7\text{?}7=0

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Step-by-step video solution

Watch the teacher solve the problem with clear explanations
00:00 Determine the correct operator to complete the equation
00:03 Calculate each possibility and select the correct one
00:07 Adding means increasing the number, so it's definitely not compatible
00:18 Multiplying the number means increasing it, so it's not compatible
00:29 Any number minus itself always equals 0, appropriate
00:37 Any number divided by itself always equals 1, so it's not appropriate
00:47 This is the solution to the question

Step-by-step written solution

Follow each step carefully to understand the complete solution
1

Understand the problem

Choose the correct sign (?):

7?7=0 7\text{?}7=0

2

Step-by-step solution

Let's evaluate each option:

  • Addition: 7+7=14 7 + 7 = 14
  • Subtraction: 7−7=0 7 - 7 = 0
  • Multiplication: 7×7=49 7 \times 7 = 49
  • Division: 7÷7=1 7 \div 7 = 1

Given we want the result to be 0, the operation that satisfies this condition is subtraction.

Therefore, the correct operation between the two 7s to equal 0 is −-.

3

Final Answer

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Practice Quiz

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\( 20:1= \)

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