Laske.

a. 100 – (20 + 40) : 2
= – :
= –
=

b. 3 · 6 – (3 + 6)
= · –
= –
=

c. 8 : 2 – (12 – 8)
= : –
= –
=

d. 7 · (21 – 16) : 5
= · :
= :
=

e. 12 : (31 – 28) : 2
= : :
= :
=

f. 9 · (16 – 9) + 6
= · +
= +
=

g. (23 – 14) · (17 – 9)
= ·
=

h. 36 : (28 – 19) · 4
= : ·
= ·
=

i. (6 + 5) · 2 + (11 – 6)
= · +
= +
=