FVOCABULARY
DECIMAL EXACT NUMBER:
DECIMAL RECURRING NUMBER:
IRRATIONAL NUMBER:
PROPORTION:
PROPORTIONAL VARIABLE:
INVERSELY PROPORTIONAL VARIABLE:
1. Operate with the following decimal numbers:
a) (2,02-1,71)·3,5 b) 20,34:(1,23+18,2) c) 1,567-3,10
2. Complete the following table, if A and B are proportional variables:
12
16
120
200
3
6
8
55
3. A car makes about 360 km every 3 hours.
a) How many kilometers would it make in 5 hours?
b) How many hours does it take to make 500 kilometers?
4. A farmer has 200 kg of food for his animals to be feed during 56 days. How much food would it be needed for 100 days?
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