Answer:
Hence, 3,40,000 can be expressed as 
Step-by-step explanation:
Step 1 of 1
Consider 3,40,000
3.4
So, 3.4 lies between 1 & 10
Now, Decimal has moved 5 places to left.

So, 3,40,000=
Answer:
"They organize data and can reveal relationships, making it easier to write equations that describe the patterns."
Step-by-step explanation:
-3/2 -15/10 this is called a negative number. Negative 1 and 5 tenths