四则混合运算
0.25×8.6×4
89+456-78
5%+. 3/7 × 49/9 - 4/3
9 × 15/36 + 1/27
2× 5/6 – 2/9 ×3
3× 5/4 + 1/4
94÷ 3/8 – 3/8 ÷6
95/7 × 5/9 + 3/7 × 5/9
6/2 -( 3/2 + 4/5 )
8 + ( 1/8 + 1/9 )
8 × 5/6 + 5/6
1/4 × 8/9 - 1/3
10 × 5/49 + 3/14
1.5 ×( 1/2 + 2/3 )
2/9 × 4/5 + 8 × 11/5
3.1 × 5/6 – 5/6
4/7 - ( 2/7 – 10/21 )
19 × 18 – 14 × 2/7
5 × 25/16 + 2/3 × 3/4
4 × 8/7 – 5/6 × 12/15
简算题
1.45+15×6= 135
2.250÷5×8=400
3.6×5÷2×4=60
4.30×3+8=98
5.400÷4+20×5= 200
6.10+12÷3+20=34
7.(80÷20+80)÷4=21
8.70+(100-10×5)=120
9.360÷40+10= 19
10.40×20-200= 600
11.(80-25)*2= 110
12.70+45=115
13.90×2÷3= 60
14.16×6÷3= 32
15.300×6÷9= 200
16.540÷9×7=420
17.30×20÷15= 20
18.400÷4×7= 700
19.(350-80)÷9= 30
20.160+70+50=280
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