Based on the information provided, here are the answers to the questions:
Question 1: Which expression is equivalent to 6 x 30?
- Answer: (6 x 3) x 10
Question 2: 40 x 4 =
- Answer: 160
Question 3: What is the answer to the last multiplication equation given in the video?
- Answer: 420 (assuming the video concluded with that equation)
Question 4: What can you use to help you solve when multiplying by multiples of 10?
- Answer: The Area Model
If you have access to the video or more specific context, please double-check the answers with the content of the video to ensure accuracy.