Question 1: Truncate 7.456 to two decimal places.

Answer: 7.45

Question 2: Round 3.14159 to three decimal places.

Answer: 3.142

Question 3: Truncate 123.9876 to the nearest whole number.

Answer: 123

Question 4: Round 9.8765 to one decimal place.

Answer: 9.9

Question 1: A car travels 123.456 km, but for reporting purposes, it is truncated to two decimal places. What is the reported distance?

Answer: 123.45

Question 2: Explain why truncating 4.999 to one decimal place gives a different result than rounding it.

Answer: Truncation cuts off after the specified decimal without rounding, so 4.999 becomes 4.9, whereas rounding considers the next digit and rounds up, making it 5.0.

Question 1: A baker needs 2.567 kg of sugar, but she only measures using a tool that truncates to two decimal places. How much sugar does she actually use?

Answer: 2.56

Question 1: Round 0.056789 to three decimal places, then truncate the same number to three decimal places. Compare the results and explain why they differ.

Answer: Rounded: 0.057; Truncated: 0.056; they differ because rounding considers the next digit to decide whether to increase the last kept digit, while truncation simply cuts off.

Question 1: Truncate 5.6789 to two decimal places. Then round it to two decimal places. Are the results the same? Why or why not?

Answer: No, they are different; truncation cuts after two decimals, resulting in 5.67, while rounding considers the third digit; since it's 8, rounded result is 5.68.

Question 1: A student truncates 6.789 to 6.78 instead of rounding to two decimal places. Is this correct? Why or why not?

Answer: No, it's incorrect for rounding. Truncation cuts off after two decimals without rounding, so 6.789 truncated to 6.78 is correct if truncating, but if asked to round, it would be 6.79.