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
B . 14÷(10-3)=14÷7
=2
C . 20-15÷5=5÷5
=1
24+8= | 81-9= | 28÷7= | 47-10= | 3×9= |
18+16= | 54÷9= | 50-18= | 18+50= | 63÷7= |