MATEMÁTICAS Colegio Teresiano del Pilar
2º de ESO Abril REPASO DE LA 1ª EVALUACIÓN EVALUACI ÓN
OPERACIONES: Números enteros, enteros, Potencias, Números Fraccionarios, decimales… 1. Realiza las siguientes operaciones: a) − 15 − (6 − 14 − 8) − (− 8 + 4) − (5 ⋅ 3 + 4) = b) − (22 − 8) − (27 − 33) − (− 8 + 10 + 7 ) = c) (− 36 − 3 ⋅ 4 + 6 ⋅ 7 ) − (6 + (− 7 )) + 4 ⋅ (− 3) + 6 = d) − 13 ⋅ (− 3) ⋅ (1 − 7 ) : [(− 2) ⋅ (− 3)] − 4 = e) 4 ⋅ (5 ⋅ (− 10 + 4) − (5 − 13)) : (− 2) + 5 = f) − (18 − 14) : [(17 − 12) + (5 − 6)] ⋅ (− 2) = g) + 32 − 5 + 7 ⋅ (4 − 7 ) : 2 + 5 ⋅ (−2) = 2. Realiza las siguientes operaciones: 12 a) (− 7 ) : 7 −3 : 7 6 = b) c)
(4 ) : (2 )⋅ 2 : 2 = (16 : 4) : (2 ⋅ 2 ) ⋅ (24 3 3
2
+7
0 3
5
−2
0
2
11 ⋅ 11 ⋅ 11 = 114 ⋅ 11 33 ⋅ 3 7 ⋅ 3 −2 e) = 3 2 ⋅ 33 7 −4 ⋅ 7 2 ⋅ 7 −3 f) = 7 − 4 ⋅ 7 −3 ⋅ 7 3 2 2 4 ⋅ 2 −2 ⋅ (10 : 5) g) = (6 : 3)3 3. Completa la siguiente tabla: a b c |a| |b| 4 -1 6 -5 -7 1 -4 -2 -3 5 2 -5 6
)
: 62 =
25
d)
|a-b|
4. Realiza las siguientes operaciones: a)
3
610 =
b) c) d)
312 =
5
7 −15 ⋅ 5 20 = −3⋅ −3⋅ −3⋅ −3 = 16
f)
= 144 9⋅ 5⋅ 5 =
g)
16 ⋅ 4 ⋅ 7 ⋅ 21 ⋅ 3 =
e)
op(a)+|c|-b
-c + op(b) + |a|