Solve the Equation: Finding the Missing Operator in 7?7=1

Choose the correct sign (?):

7?7=1 7\text{?}7=1

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Step-by-step video solution

Watch the teacher solve the problem with clear explanations
00:00 Determine which operation(s) are correct
00:03 Calculate each possibility and select the correct one(s)
00:07 A number divided by itself is always 1 - so this is the right operation!
00:12 Multiplication increases the value, so it isn’t the correct operation here
00:19 Since addition increases the number, it is definitely not the correct operation here
00:24 A number minus itself is always 0, so that’s not the right choice
00:28 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=1 7\text{?}7=1

2

Step-by-step solution

To solve this problem, let's evaluate which arithmetic operation or sign makes the equation 7?7=1 7 \text{?} 7 = 1 true:

  • Addition: 7+7=14 7 + 7 = 14 , which is not 1.
  • Subtraction: 7−7=0 7 - 7 = 0 , which is not 1.
  • Multiplication: 7×7=49 7 \times 7 = 49 , which is not 1.
  • Division: 7÷7=1 7 \div 7 = 1 , which satisfies the equation.

Therefore, the correct sign is the division sign. The equation becomes:

7÷7=1 7 \div 7 = 1

Thus, the correct sign is :.

3

Final Answer

:

Practice Quiz

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\( 20:1= \)

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