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Synopsis Addition on numeric values.
Syntax Exp1 + Exp2
Types
Exp1 Exp2 Exp1 + Exp2
int int int
int real real
real real real
Description Yields the numerical sum of the values of Exp1 and Exp2.
Examples 
rascal>12 + 13
int: 25
rascal>12 + 13.5
real: 25.5

Questions
Question [1]. Adding integers.
The type of 8 + 1 is

Question [2]. Adding integers. 
1 + 0  ==

Question [3]. Adding integers and reals.
The type of 6 + 18.8948051989817960 is

Question [4]. 
2 + 7.05199656183175260  ==

Question [5]. Use parentheses when addition and negative numbers interact. 
-13 + (-16) ==

Question [6]. Use parentheses when addition and negative numbers interact. 
-6 +  == -15



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