①70-47=
②38+47=
③63-28=
④53+46-24=
⑤72-34-27=
⑥100-(35+38)=
23+51= 9+45= 82-38=
28+15-33= 95-47-39= 19+(45-37)=
69+20=
61-4=
61-34=
4+54-10=
22+56=
44-24=
27+50=
26+(40-8)=
( )+36=50
98-( )=20
( )-51=48
=
45+375 18+1927 16+27+4386
82-532 75-3639 58-(27-14) 17