This video explains how to square any two digit number without using a calculator and shows the proof.

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# Proof: Shortcut Method of Squaring a Two Digit Number

# Square Any Two-Digit Number without Using Calculator

# Square a Two-Digit Number Ending in 5 without Using a Calculator

# Curious Calculation: 3 Digit Num Divided by Sum of Digits (Proof Included)

# Curious Calculation: Result is Always 8 (Proof Included)

# Curious Calculation: Result is Always 3 (Proof Included)

# A Pattern with the Product of 11 and Another 2 Digit Number

This video explains how to square any two digit number without using a calculator and shows the proof.

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This video explains how to square any two digit number without using a calculator.

This video explains how to square a two-digit number ending in 5 without using a calculator.

This video show a calculation starting with a 3 digit number with all the same digit divided by the sum of the digits is always the same result.

This video show a calculation starting with any counting number that always results in 8. A proof is included.

This video show a calculation starting with any counting number that always results in 3. A proof is included.

This video shows the pattern with a product of 11 and another 2 digit number.