Convert the following measurements between metres and kilometres. Also, complete a practical measurement activity.

Here are the solutions for the problems: 1. Write the following in kilometres: To convert metres to kilometres, divide by 1000. a. 1000 m = (1000)/(1000) km = 1 km b. 700 m = (700)/(1000) km = 0.7 km c. 150 m = (150)/(1000) km = 0.15 km d. 270 m = (270)/(1000) km = 0.27 km e. 100 m = (100)/(1000) km = 0.1 km f. 920 m = (920)/(1000) km = 0.92 km 2. Write the following in metres: To convert kilometres to metres, multiply by 1000. a. 1 km = 1 × 1000 m = 1000 m b. 0.5 km = 0.5 × 1000 m = 500 m c. 0.250 km = 0.250 × 1000 m = 250 m d. 2 km = 2 × 1000 m = 2000 m e. 1.4 km = 1.4 × 1000 m = 1400 m f. 1.25 km = 1.25 × 1000 m = 1250 m 3. Do this practical activity in your class. Part 1: a. How many metres is it from the back of your class to the front? This requires a physical measurement of your classroom. Measure your classroom b. How many metres is it from the one side to the other side of your class? This requires a physical measurement of your classroom. Measure your classroom c. If a classroom is 10 m long, how many classrooms can you fit into 1 km? Step 1: Convert 1 km to metres. 1 km = 1000 m Step 2: Divide the total distance by the length of one classroom. Number of classrooms = 1000 m10 m/classroom = 100 classrooms Part 2: a. How long is a second? A second is a base unit of time. It is approximately the duration of one tick of a clock or one beat of a human heart at rest. A base unit of time b. Guess how many seconds it will take to walk from the front to the back of the class. This requires an estimate and then a measurement. • Write down your estimate. Your estimate • Measure it with a watch or a stopwatch and write down your answer. Your measurement • What is the difference between your estimate and the measurement? Difference = |Your estimate - Your measurement| 3 done, 2 left today. You're making progress.