Random Flashcards
Divisibility Rules:
3
Sum of digits divisible by 3:
Ex. 405 –> 4+0+5= 9
9/3=3
Divisibility Rules:
4
Last 2 digits of the number are divisible by 4
Ex. 40,832
32 is divisible by 4
32/4=8
Divisibility Rules: 5
Last digit is either a 5 or 0
Divisibility Rules: 6
Even number AND the same of digits is divisible by 3
Ex. 1458
1+4+5+8 = 18
18/6=3
Divisibility Rules: 8
If the last three digits are divisible by 8
Ex. 34,152
152/8=19
Divisibility Rules: 9
Sum of digits is divisible by 9
Ex. 2,880
2+8+8+0=18
18/2=9
Name all decimal places:
TBD
Convert Fraction to a Decimal
Decimal to a Fraction
Ratio Rules
Proportion Rules
Convert to Percentages
To Find a Part That is Certain Percentage of a Whole
To Find the Percent Change
1 Mile
5,280 feet