To compare the lengths, convert them all to inches. Anna's rocket: (4 × 12) + 2 = 48 + 2 = 50 inches. Ben's rocket: 51 inches. Chloe's rocket: (4 × 12) + 5 = 48 + 5 = 53 inches. David's rocket: 48 inches. Comparing the lengths in inches (50, 51, 53, 48), the greatest length is 53 inches, which belongs to Chloe's rocket.

To divide 11 feet 3 inches by 3, first convert the total length to inches. 11 feet × 12 inches/foot = 132 inches. Add the extra 3 inches: 132 + 3 = 135 inches. Now, divide the total inches by 3: 135 inches ÷ 3 = 45 inches. Finally, convert 45 inches back to feet and inches. 45 ÷ 12 = 3 with a remainder of 9. So, each beam is 3 feet 9 inches long.

First, find the total distance in inches. There are 60 seconds in a minute. The car travels 2 inches each second, so in one minute it travels 60 × 2 = 120 inches. Next, convert this distance to feet. There are 12 inches in a foot. 120 inches ÷ 12 inches/foot = 10 feet.

To find the original length, add the length of the cut piece to the length of the remaining piece. Add the feet: 3 + 7 = 10 feet. Add the inches: 5 + 10 = 15 inches. The original length was 10 feet 15 inches. Convert 15 inches to 1 foot 3 inches. Add this to the feet: 10 feet + 1 foot 3 inches = 11 feet 3 inches. Finally, convert the total length to inches: (11 × 12) + 3 = 132 + 3 = 135 inches.

First, find the total length of the string in inches: 6 feet × 12 inches/foot = 72 inches. Amy cuts off one-fourth, so three-fourths of the string remains. Calculate the length of the remaining piece: (3/4) × 72 inches. To do this, divide 72 by 4, which is 18. Then multiply by 3: 18 × 3 = 54 inches.

First, determine how many feet of rope Sarah needs. Convert 90 inches to feet: 90 inches ÷ 12 inches/foot = 7.5 feet. Since the store only sells rope in whole-foot lengths, Sarah must buy 8 feet of rope to have enough. Then, calculate the cost: 8 feet × $4/foot = $32.00.

To find the difference in height, both heights must be in the same unit. Let's convert Sam's height to inches. 5 feet is 5 × 12 = 60 inches. Add the extra inch: 60 + 1 = 61 inches. Sam is 61 inches tall, and Tom is 63 inches tall. The difference is 63 - 61 = 2 inches.

This question tests the ability to convert between feet and inches, a key skill in mathematics achievement for ISEE Lower Level. Conversion between feet and inches relies on the understanding that 1 foot equals 12 inches, and this conversion is critical for solving measurement problems. In this scenario, you apply the conversion factor to translate 6 feet into inches by multiplying 6 × 12 = 72 inches, as needed for the treehouse platform. The correct answer, B (72 in), is accurate because it reflects the proper application of the conversion factor, demonstrating a clear understanding of how to switch between units. The distractor A (60 in) fails because it results from a common mistake of multiplying by 10 instead of 12, confusing the decimal system with the imperial system. To help students master this skill, practice converting between units using real-world examples, and reinforce the conversion factor through drills. Encourage students to double-check their work by reversing the conversion to ensure accuracy.

This question tests the ability to convert between feet and inches, a key skill in mathematics achievement for ISEE Lower Level. Conversion between feet and inches relies on the understanding that 1 foot equals 12 inches, and this conversion is critical for solving measurement problems. In this scenario, you apply the conversion factor to translate 3 feet 6 inches into inches by calculating (3 × 12) + 6 = 36 + 6 = 42 inches for the treehouse ladder. The correct answer, A (42 in), is accurate because it reflects the proper application of the conversion factor, demonstrating a clear understanding of how to switch between units. The distractor B (36 in) fails because it results from a common mistake of forgetting to add the extra 6 inches, only converting the feet portion. To help students master this skill, practice converting between units using real-world examples, and reinforce the conversion factor through drills. Encourage students to double-check their work by reversing the conversion to ensure accuracy.

This question tests the ability to convert between feet and inches, a key skill in mathematics achievement for ISEE Lower Level. Conversion between feet and inches relies on the understanding that 1 foot equals 12 inches, and this conversion is critical for solving measurement problems. In this scenario, you need to find the difference between 8 feet and 6 feet, which is 2 feet, then convert to inches: 2 × 12 = 24 inches that need to be cut. The correct answer, B (24 in), is accurate because it reflects the proper application of the conversion factor, demonstrating a clear understanding of how to switch between units. The distractor A (12 in) fails because it results from a common mistake of thinking the difference is only 1 foot instead of 2 feet. To help students master this skill, practice converting between units using real-world examples, and reinforce the conversion factor through drills. Encourage students to double-check their work by reversing the conversion to ensure accuracy.