Ava's pine tree is 10 meters tall. Zachary's pine tree is 4 meters shorter than Ava's tree. Who has the taller pine tree?

In Ryan's house, the office is 4 meters long. The dining room is 4 meters longer than the office. Which room is shorter?

Olivia's pine tree is 15 meters tall. Ava's pine tree is 8 meters shorter than Olivia's tree. Who has the taller pine tree?

Kayla's pine tree is 16 meters tall. Hailey's pine tree is 7 meters shorter than Kayla's tree. Who has the taller pine tree?

At school there is a competition for who can grow the tallest bean plant. Darren's plant is 9 centimeters tall. Natalie's plant is 2 centimeters tall. If Madeline's plant is 15 centimeters tall, how much taller is Madeline's plant than the combined height of the other two?

Natalie has an assignment to figure out how tall the 3 tallest sky scrapers in her city are. If one building is 2 hectometers tall, the second is 3 hectometers tall, and the third building is 11 hectometers tall, how much taller is the tallest building than the combined height of the other two buildings?

There is a yellow, a blue and a red ribbon. The blue ribbon is 3 meters long, the red ribbon is 1 meter longer than the blue ribbon, and the yellow ribbon is 3 meters longer than the red ribbon. How long is the yellow ribbon?