Look at part 1. How many meters tall is the boy? How many centimeters tall is he?
1 meter. He is 100 centimeters tall.
Which unit do you need more of in order to measure his height? Why?
Centimeters. The units for centimeters are smaller.
About how many pounds do you think he weighs?
Answers vary; accept answers in a range of 25 pounds to 40 pounds.
About how many liters are in the bottle?
Look at the table in part 2. 30 is how many times as great as 2?
45 is how many times as great as 3?
What are the missing values in the table?
How can you get from the input to the output?
Multiply by 15.
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