INICIO

SUMAS Y RESTAS NIVEL 5 ; A,B,C = NUMEROS (-10 A 10)
(A) + (B)	(A) - (B)	- (A) + (B)	- (A) - (B)	(A) + (B) + (C)	(A) + (B) - (C)	- (A) - (B) + (C)	- (A) - (B) - (C)
SUMAS Y RESTAS NIVEL 6 ; A,B,C,D = NUMEROS (-10 A 10)
(A - B) + (C - D)		- (A + B) - (C + D)		(- A + B) + (- C + D)	- (A - B) + (C - D)	- (A - B) - (- C + D)	- ( - A - B) - ( - C - D)
SUMAS Y RESTAS NIVEL 7 ; A,B,C,D = NUMEROS (-20 A 20)
(A) + (B)	(A) - (B)	- (A) + (B)	- (A) - (B)	(A) + (B) + (C)	(A) + (B) - (C)	- (A) - (B) + (C)	- (A) - (B) - (C)
SUMAS Y RESTAS NIVEL 8 ; A,B,C,D = NUMEROS (-20 A 20)
(A - B) + (C - D)		- (A + B) - (C + D)		(- A + B) + (- C + D)	- (A - B) + (C - D)	- (A - B) - (- C + D)	- ( - A - B) - ( - C - D)
SUMAS Y RESTAS NIVEL 11 ; A,B,C,D = NUMEROS (-100 A 100)
(A) + (B)	(A) - (B)	- (A) + (B)	- (A) - (B)	(A) + (B) + (C)	(A) + (B) - (C)	- (A) - (B) + (C)	- (A) - (B) - (C)
SUMAS Y RESTAS NIVEL 12 ; A,B,C,D = NUMEROS (-100 A 100)
(A - B) + (C - D)		- (A + B) - (C + D)		(- A + B) + (- C + D)	- (A - B) + (C - D)	- (A - B) - (- C + D)	- ( - A - B) - ( - C - D)