Final answer:
To find each missing length to the nearest tenth, you need to round the measurements to the nearest tenth place value. For example, if you have a measurement of 2.345 cm, you would round it to 2.3 cm. Let's apply this to the given examples: For the recipe, one quarter of 400 grams is 100 grams. Therefore, Leena will need 100 grams of flour. The scale of the map is 0.5 centimeter = 2 kilometers. Since the buildings are 9 centimeters apart on the map, the actual distance between them is 9 * 2 kilometers = 18 kilometers = 18,000 meters.
Step-by-step explanation:
To find each missing length to the nearest tenth, you need to round the measurements to the nearest tenth place value. For example, if you have a measurement of 2.345 cm, you would round it to 2.3 cm.
Let's apply this to the given examples:
For the recipe, one quarter of 400 grams is 100 grams. Therefore, Leena will need 100 grams of flour.
The scale of the map is 0.5 centimeter = 2 kilometers. Since the buildings are 9 centimeters apart on the map, the actual distance between them is 9 * 2 kilometers = 18 kilometers = 18,000 meters.