Ratkaise tehtävä.

a. 52 – (21 – 13)
= 52 –
=

b. 24 + (32 – 14)
= 24 +
=

c. (38 – 19) – (21 – 9)
= –
=

d. (14 + 18) – 14 + (18 – 9)
= – 14 +
=

e. 67 + 18 – (67 – 18)
= 67 + 18 –
= –
=

f. 99 – (27 + 38) + (49 – 10)
= 99 – +
=

g. 100 – (44 – 26) – (25 + 37)
= 100 – –
=