内容正文:
比例方程
2.5:5=x:8
3x:50=6:5
3.7:x=2.4:4.8
0.36:8=:25
2x:=:2
48:x=:
∶=∶6
:x=:0.5
:=2.25:3
$$分数方程
(1)
(2)
(3)
(4)
(5)
(6)20%x-1.8×4=0.8
(7)X+50%x=7.5
(8)x+0.375x=3
(9)5.6x-x=4.8
(10)5x-3
(11)-=23
(12):=
(13)
(14)
(15)0.2=1-
(16)
$$3、凑整法
(1)4.05-2.83-0.17
(2)15.06-5.27-4.73
(3)38.75-15.38+61.25-4.62
(4)
(5)
(6)-+-
(7)
(8)13.92-(1.19+9.92)-2.81
(9)44÷1.25÷8
(10)27÷(2.7×2.6)
(11)4.02×8.1×÷(0.6×0.81)
(12)0.25×3.2×1.25
(13)1.1+3.3+5.5+7.7+9.9+11.11+13.13+15.15+17.17+19.19
(14)
(15)
(16)
$$2、纯计算
(1)
(2)
(3)6÷
(4)(125-97)×4+99-51÷3
(5)0.74×1.5÷3.7+0.56÷0.2
(6)131-1024÷56×7+38
(7)0.25×3.6÷0.3+1.96÷14 105×35-465
(8)72.24÷1.2+9.2×0.15
(9)[3.54-2.54×(2.7-2.7)]÷11.8
(10)
(11)
(12) (13)
(14)(-)÷+
(15)
(16)()
(17)
(18)1×[2+7÷(3-1)]
(19) 9÷(-+)-3×7
(20)()÷()
(21)
(22)×(1÷-÷1)+
(23)
(24)[]÷0.5
(25)[0.46-0.12×()]÷1.3
(26)[-(0.25+)×]+
(27)
(28)
$$
199×68 299×78
12×() 24
( +1—— )×36÷
128×32+72×32 29×12+29×13+29×25+29×10 199×68+(200-1)×32
9
5.2× +1.8×0.25+25% 0.125×
+5.5×80%+0.8 5.2×+1.8×0.25+25%
(3.14×4+3.14×3+3.14)×12.5 (5+4)×+0.6×(5-5) 6-0.65+×99
97÷ +47×97
2.25×+2.75÷1+60%
乘法分配率(一般难度) 4月26号 星期二
(1)0.19×1.25+8.1×0.125 (2)200.5+9.9×2005
(3)
(4)2.5×0.875+0.25×1.25
(5)0.374×48+0.62×37.4-3.74 (6)148×3.7+14.8×62+0.148×100
(7)20.07×1994-19.93×2007 (8)
(9)12×35+28×70-8×35
乘法分配率(复杂) 4月27号 星期三
(1)9999×2222+3333×3334 (2)3333×3333+9999×8889 (3)9999×7+1111×37
(4)1999÷ (5)2