Today we corrected "1.6 Square Roots"
We learned that:
Squared means to the exponent 2
Cubed means to the exponent 3
We learned that numbers are divisible:
By 2 - If they are even
By 5 - If they end in 5 or 0
By 4 - If the last two digits of the number are divisible by 4
For examples one million, one hundred twenty-four thousand and twenty-four (1,124,024) *is* divisible by four because the last two digits (24) is divisible by 4.
HW - 1) Finish "1.4 Calculating Powers"
2) Use the internet to find the divisibility rule for 3 and for 9. On the same piece of paper as the notes you took in class write a sentence to explain the rule and give an example.
Easy BONUS: Find the best youTube video that explains the divisibility rules.
Difficult BONUS: Research and briefly explain *why* the rules for 3 and 9 work.
