1. Laske.
a) 5 ∙ 8 − 12 =
b) 27 + 4 ∙ (−3) =
c) −3 ∙ 8 + (−9) =
d) 5 ∙ 6 − 2 ∙ (−9) =

2. Laske.
a) 10[[$^2$]] + 8 ∙ (−5) =
b) −19 + 4[[$^2$]] =
c) 4[[$^3$]] − 28 : 4 ∙ 9 =
d) 6[[$^2$]] − 3 ∙ 2[[$^3$]] =


3. Laske.
a) [[$\frac{25-9}{5+3}$]]=
b) [[$\frac{6\cdot 7}{12-5}$]] =
c) [[$\frac{3\cdot 11 +7}{5\cdot 4}$]]=
d) [[$\frac{-4-3\cdot 7}{5^2}$]] =


4. Laske.
a) −8 ∙ (15 − 9) =
b) (32 − 14) : (−6) =
c) −2 ∙ (16 − 10) ∙ (−4) =
d) (4 ∙ 3 − 7) ∙ (−2) =

5. Mikä luku sopii x:n paikalle?
a) 18 − 4 ∙ x = 6 , x =
b) −5 ∙ (x + 2) = −45 , x =
c) −7 + 2 ∙ x = −25 , x =
d) 3 ∙ x + 15 = 3 , x =

6. Laske.
a) 5 ∙ (10 − (3 ∙ 4)) =
b) 15 ∙ 6 − (4 ∙ 6 ∙ (12 − 9)) =
c) 25 − {6 + [(14 − 8) ∙ 3]} =
d) 37 − {12 + [4 ∙ (24 + 15) : 3]} =