Squaring Numbers in the 50s

This video tutorial teaches how to square numbers in the 50s using a simple method. The process involves adding 25 to the unit's digit and then squaring the unit's digit to form the final answer. The video provides three examples: squaring 54, 57, and 58, demonstrating the step-by-step approach for each. The lesson concludes with a summary of the method and encourages viewers to practice the technique.

What is the first step in squaring numbers in the 50s?

• Subtract 5 from the units digit

• Multiply the units digit by 2

• Add 25 to the units digit

• Add 10 to the units digit

When squaring 54, what is the result of adding 25 to the units digit?

• 32

• 30

• 29

• 31

What is the second step in the method for squaring numbers in the 50s?

• Subtract 10 from the units digit

• Add 5 to the tens digit

• Square the units digit

• Multiply the tens digit by itself

What is the square of the units digit in 54?

• 12

• 14

• 18

• 16

What is the final result of 54 squared?

• 2,946

• 2,936

• 2,926

• 2,916

In the example of squaring 57, what is the first part of the answer?

• 33

• 32

• 31

• 30

What is the square of the units digit in 57?

• 48

• 47

• 49

• 50

What is the final result of 57 squared?

• 3,249

• 3,259

• 3,269

• 3,279

In the example of squaring 58, what is the first part of the answer?

• 35

• 34

• 33

• 32

What is the square of the units digit in 58?

• 63

• 64

• 62

• 65