75-(24+12)39 36÷6+2740 18-6+918-(6+9)
24÷(8-2) 24÷8-2 8×2÷4 4 6×7+26×(7+2)
( )
=18+4
=22
=14÷7
=2
=5÷5
=1
24+8=
81-9=
28÷7=
47-10=
3×9=
18+16=
54÷9=
50-18=
18+50=
63÷7=
7×4+25 54÷(43-37) 63÷9+34
(77-69)×7 18-6÷3 (32+16)÷8
①
②