# Fractions and Decimals

## Exam Prep Study Notes (Things to remember)

 Divisibility by 2 The last digit is even (0, 2, 4, 6, or 8).  Example - 1294: 4 is even. Divisibility by 3 Sum the digits. The result must be divisible by 3. Example - 405 → 4 + 0 + 5 = 9 and 636 → 6 + 3 + 6 = 15 which both are clearly divisible by 3. ...... .......

### Tips

 Multiply fractions To multiply fractions, just multiply the numerators and then the denominators. Meaning of 'of' In Math, the word 'of' is often used to denote multiply. ..... ......

### Place values

FRACTION NAME DECIMAL NUMBER FRACTION
tenth
0.1 1/10
hundredth
0.01 1/100
thousandth
..... ......
....... ....... ......

### METRIC PREFIXES

Text Symbol Factor Power
yotta
Y 1000000000000000000000000 1024
zetta
Z 1000000000000000000000 1021
exa
E 1000000000000000000 1018
.....
... ..... ....

### ROMAN NUMERALS

Symbol I V X L C D M
Value 1 5 10 50 100 500 1,000

‹ Exponents and Roots            up             Geometry ›

NOTE: You need to be subscribed to either a monthly or annual plan to view the full list of ScienceBee Exam Prep Study Notes.
Please visit  to register for a plan.

Have fun learning!