Question 1: List the first 10 multiples of 3.

Answer: 3, 6, 9, 12, 15, 18, 21, 24, 27, 30

Question 2: Calculate the 7th multiple of 5.

Answer: 35

Question 3: What is the 10th multiple of 2?

Answer: 20

Question 4: Identify the mistake in the following list of multiples of 4: 4, 8, 12, 16, 21, 24, 28, 32, 36, 40.

Answer: The mistake is 21, which is not a multiple of 4. The correct sequence is 4, 8, 12, 16, 20, 24, 28, 32, 36, 40.

Question 5: Construct a line segment on the grid representing the first 10 multiples of 6, spacing each point equally.

Answer: Students draw points at intervals representing 6, 12, 18, 24, 30, 36, 42, 48, 54, 60 along a line.

Question 6: Using the grid, plot the graph of y = 2x for x = 1 to 10.

Answer: Students plot points (1,2), (2,4), (3,6), ..., (10,20).

Question 7: Explain why the first 10 multiples of 7 are all divisible by 7.

Answer: Because each multiple of 7 is obtained by multiplying 7 by an integer, so each multiple is divisible by 7.

Question 8: What is the mistake in this statement: 'The first 10 multiples of 9 are 9, 18, 27, 36, 45, 54, 63, 72, 81, 90.'

Answer: There is no mistake; the statement is correct.

Question 9: Identify and correct the error: The 10th multiple of 8 is listed as 70.

Answer: The 10th multiple of 8 is 80, not 70.

Question 10: Solve the multi-step problem: If a box contains multiples of 5 starting from 5 up to the 10th multiple, what is the total sum of all these multiples?

Answer: Sum = 5 + 10 + 15 + 20 + 25 + 30 + 35 + 40 + 45 + 50 = 330

Question 11: Identify the common misconception: Students often think the 10th multiple of any number is the number multiplied by 10. Why is this incorrect?

Answer: Because the 10th multiple of a number is the number multiplied by 10 only if counting starts from 1, but some students mistake the sequence or count incorrectly.