Answer:

Step-by-step explanation:
step 1
Find out the price of 160 begonias, if she bought them separately

step 2
Find out the price of 160 begonias, if she bought them by the flat
Remember that
One flat are 20 plants
so
For 160 plants are needed
160/20=8 flat

step 3
Find out the difference

Step-by-step explanation:

Try putting it on a timeline. It makes more sense that way :)
Answer: 2000
Step-by-step explanation:
6 zeros
You pretty much just multiply the 4 and the 8 and proceed by adding the quantity of zeros. So the product would be 32,000,000.