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:
![](https://s3.amazonaws.com/brainscape-prod/system/cm/360/648/016/q_image_thumb.png?1634918990)
TBD
Convert Fraction to a Decimal
![](https://s3.amazonaws.com/brainscape-prod/system/cm/361/928/720/a_image_thumb.png?1635913756)
Decimal to a Fraction
![](https://s3.amazonaws.com/brainscape-prod/system/cm/361/928/941/a_image_thumb.png?1635914248)
Ratio Rules
![](https://s3.amazonaws.com/brainscape-prod/system/cm/361/929/238/a_image_thumb.png?1635914624)
Proportion Rules
![](https://s3.amazonaws.com/brainscape-prod/system/cm/361/929/552/a_image_thumb.png?1635914654)
Convert to Percentages
![](https://s3.amazonaws.com/brainscape-prod/system/cm/361/929/566/a_image_thumb.png?1635914683)
To Find a Part That is Certain Percentage of a Whole
![](https://s3.amazonaws.com/brainscape-prod/system/cm/361/929/585/a_image_thumb.png?1635914738)
To Find the Percent Change
![](https://s3.amazonaws.com/brainscape-prod/system/cm/361/929/613/a_image_thumb.png?1635914785)
1 Mile
5,280 feet