Try to say it and write what you say, that helped me learn how to do this. I hope this helps.
Answer: 19,990,000 times
Step-by-step explanation: Land area of Russia = 20000000
Land area of Puerto Rico = 10000
20000000 - 10000 = 19,990,000
Answer:
b. 3
Step-by-step explanation:
20-17=3