standard_description: Know there is a complex number i such that i^(2) = –1, and every complex number has the form a + bi with a and b real.
problem_activity: Task
Decide which value is closest to the answer for each of the following questions. Explain your reasoning.
8 bottles each contained 1.2 liters of water. About how many liters of water were there all together?
{"table": [{"tbody": [{"tr": [{"td": [{"_value": "0.1"}, {"_value": "1"}, {"_value": "10"}, {"_value": "100"}]}]}]}]}
A school bought 8.5 kilograms of apples. If apples cost $2.45 per kilogram, about how much did they pay (in dollars)?
{"table": [{"tbody": [{"tr": [{"td": [{"_value": "0.2"}, {"_value": "2"}, {"_value": "20"}, {"_value": "200"}]}]}]}]}
A laptop contains about 0.0006 kilograms of gold. If a manufacturer plans to produce 10,100 of these laptops, about how many kilograms of gold are needed?
{"table": [{"tbody": [{"tr": [{"td": [{"_value": "0.6"}, {"_value": "6"}, {"_value": "60"}, {"_value": "600"}]}]}]}]}


aligns: no