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.

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#
arithmetic

# 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)

# Order of Operations: Simplify 60/5(7-5) and 2+5(8-5)

# Convert Percentages to Decimals – Two Methods

# Determine if an Equation is a Proportion (Cross Products)

# Write a Proportion from a Sentence

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.

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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 reviews how to simplify two basic expressions using the order of operations.

This video explains two methods for converting percentages to decimals.

This video explains how to use cross products to determine if an equation is a proportion.

This video explains how to write a proportion from a sentence.