Question 1: Calculate: 12.34 + 23.45

Answer: 35.79

Question 2: Add: 7.89 + 6.78 + 3.45

Answer: 18.12

Question 3: Calculate: 45.67 + 23.45

Answer: 69.12

Question 4: Add: 0.99 + 1.01

Answer: 2.00

Question 5: Calculate: 12.55 + 7.45

Answer: 20.00

Question 6: Add: 3.33 + 4.44 + 5.55

Answer: 13.32

Question 7: Calculate: 19.87 + 13.45

Answer: 33.32

Question 8: Add: 8.25 + 4.75 + 2.00

Answer: 15.00

Question 9: Calculate: 54.32 + 10.68

Answer: 65.00

Question 10: Plot the graph of y = 2x for x between 0 and 10 on the grid.

Answer: Students plot points (x, 2x) for x=0 to 10.

Question 11: Construct a triangle with sides 5.25, 7.50, and 9.75 on the grid.

Answer: Students draw the triangle with given side lengths.

Question 12: A shop sells a pen for £1.99 and a notebook for £2.45. How much do 3 pens and 2 notebooks cost?

Answer: 3×1.99 + 2×2.45 = £5.97 + £4.90 = £10.87

Question 13: Find the total when you add 23.45, 56.78, and 12.34.

Answer: 23.45 + 56.78 + 12.34 = 92.57

Question 14: A calculator shows the total as 45.678 when adding 20.34 and 25.34. Identify and correct the mistake in the addition.

Answer: Incorrect: 20.34 + 25.34 = 45.68 (rounded to 2dp). The calculator should show 45.68, not 45.678.