1、 | 2、 | 3、 | 4、 |
B | B | A | C |
24 | 10 | 0.5 | 2/3 |
0.027 | 3又3/5 | 27/8 | 20 |
1050÷7-24x4 =150-96 =54 |
10.5-6.25-3.75+7.5 =(10.5+7.5)-(6.25+3.75)
=18-10
=8
|
3/8x30+2÷8/3 =3/8x30+2x3/8 =3/8x(30+2) =3/8×32 =12 |
56x(1+4/7)÷8/11
=56×11/8x(1+4/7)
=77x(1+4/7)
=77x1+77x4/7
=77+44
=121
|
5/8÷[13/12-(1/12+1/4)]
=5/8÷[13/12-1/3]
=5/8x4/3
=5/6
|
(1/8+1/4-1/6)x24
=1/8x24+1/4x24-1/6x24
=3+6-4
=5
|
5/9:x=2/3:36 2/3x=20 x=30 |
5x+12.9=37.9 5x=25 x=5 |
1、 | 2、 | 3、 | 4、 |
× | √ | × | √ |