小学四年级的小数乘除、加减算式

问题描述:

小学四年级的小数乘除、加减算式

小数乘除法计算题2010-02-07 09:24乘法:
5.6×2.9
3.77×1.8
0.02×96
5.22×0.3
9.99×0.02
4.67×0.9
5×2.44
1.666×6.1
9.432×0.002
5.6×6.5
4.88×2.9
5.61×4.3
8.9×2.4
5.5×55
9.77×0.02
1.384×5.1
8.78×83
2.6×61
0.059×0.2
4.268×1.7
57×5.7
9.46×2.85
17.8×6.4
1.5×4.9
2.5×0.88
5.555×5.2
2.22×3.33
7.658×85
36.02×0.3
56.78×8
除法:
85.44÷16
42.84÷7
101.7÷9
67.5÷15
230.4÷6
21.24÷36
0.736÷23
43.5÷12
35.21÷7
39.6÷24
6.21÷0.03
210÷1.4
51.3÷0.27
91.2÷3.8
0.756÷0.18
0.66÷0.3
11.97÷1.5
69.6÷2.9
38.4÷0.8
15÷0.06
(循环小数的用简便方法,除不尽保留2位小数):
8.2÷0.12
0.8÷0.9
76.4÷5.4
4.7÷3
1.25÷1.2
32÷42
14.36÷2.7
8.33÷6.2
1.7÷0.03
2.41÷0.7
用竖式计算
0.396÷1.2=0.756÷0.36=15.6×13=
0.18×15= 0.025×14=3.06×36=
0.04×0.12= 3.84×2.6≈ 5.76×3=(保留一位小数)
7.15×22 90.75÷3.33.68×0.25
16.9÷0.131.55÷3.93.7×0.016
13.76×0.8= 5.2×0.68.4×1.3
6.4×0.54.48×0.45.25×5
35.4×4.20.042×0.54 0.76×0.32
0.25×0.046 2.52×3.41.08×25
0.12×0.5×0.16= 4.8×0.25=0.125×1.4≈(保留两位小数)
2.5÷0.7=(保留三位小数) 10.1÷3.3= (商用循环小数)
10.75÷12.5= (用乘法验算)3.25×9.04= (用除法验算)

3、脱式计算(能简算的要简算)
2.5×7.1×416.12×99+16.125.2×0.9+0.9
7.28×99+7.28 4.3×50×0.264-2.64×0.5
26×15.7+15.7×24 (2.275 +0.625)×0.28
3.94+34.3×0.2 1.2×(9.6÷2.4)÷4.8

8.9×1.1×4.72.7×5.4×3.9 3.6×9.85-5.46
8.05×3.4+7.66.58×4.5×0.92.8×0.5+1.58
32+4.9-0.94.8-4.8×0.5(1.25-0.125)×8
4.8×100.156.5×99+56.5 7.09×10.8-0.8×7.09
4.85 + 0.35 ÷ 1.4
8.7 × 17.4 - 8.7 × 7.4
12.5×0.4×2.5×80.87×3.16+4.649.5×101
0.68 ÷(5.2 -3.5)× 1.25
40.5 ÷ 0.81 × 0.184.8 ×(15 ÷ 2.4)
6.81+6.81×99 0.25×185×40 4.4×0.8-3.4×0.8
(9.37+9.37+9.37+9.37)× 2.5
2.37×6.3+2.37×3.7 2.5×1.25×0.323.8×10.1
2.5×(3.8×0.04) 7.69×101 3.8×10.1
0.25×39+0.250.125×72 46×0.33+54×0.33
(8×5.27) ×1.256.81+6.81×99 0.25×185×40
6.8×0.75÷0.5 3.75÷0.125–2.75 1.53+23.4÷7.2
9.5×9913.5×0.98 12.5×8.8
二、解方程:
54-X=24 7X=49 126÷X=42
13+A=28.52.4X=26.47.5x-3x=18
5×1.3-2x=5.5 24x+6x=63.65.6x+4.4x=5.2
x+3.86=5.46
17.89-x=12.89
40.8+x=57.3
x-3.25=16
2x+0.82=8.2
3+0.5x=7
7.8÷x=2.6
80x÷4=12
5-0.9x=2.75
2x+0.4x=48
6-2x+6x=18
35x+13x=9.6
0.52×5-4x=0.6
0.7(x+0.9)=42
1.3x+2.4×3=12.4
3.5x = 140
2x +5 = 40
15x+6x = 168
5x+1.5 = 4.5
13.7—x = 5.29
4.2 × 3—3x = 5.1 (写出检验过程)
20.5-4x=8.1
3.6x÷1.2=9.75
18×1.5-1.7x=13.4
18.5x-9.9x=1.721
9.2x+1.5x=32.1
7.2×5-8x=11.2
4x+3×0.7=6.5
(口算)
0.6×1.2=0.84÷0.6=4.5×0.1=
15×0.4=0.1×0.5=2.8÷7=
100÷0.01=1.4×3=0.72÷8=
6÷0.03=0.5×0.6=40×0.9=
4÷0.5=7×2.1=8.89+0.1=
24×0.25=0.1÷0.01=2.4×0.8=
9×0.4=10×0.01=30.2-3.02=
4.3-0.25=1-0.82=9.6÷0.3=
2.6×0.01=0×25.4=4.8×0.4=
7.2+2.8=
12×2.5=
2.63+0.37=
0.7×16-16×0.2=
0.96÷0.3=
1.5-4.5=
2.5×0.4
1.4×2.5×4=
8-2.5=
6÷1.2=
9.2÷2.3=
24÷4+56÷4=
0.36+0.64=
4÷0.25=
1.8×5=
30×(200+3)=
8.4÷4.2=
8×1.5=
4.8÷0.3=
2.73+1.5×4=
计算下面各题(能简算的要简算)
7.05×23.7+7.05×76.3
0.125×3.2×2.5
12.81-(1.5+7.81)
8.7×2.6+6.4×8.7+8.7
1025-1125÷4.5×3.6
12.25-3.1+0.85-6.17
(1.9-1.9×0.9)÷(3.8-2.8)
2.65×1.7+1.35×1.7
列竖式计算,得数保留一位小数.
1.2×1.4=0.37×8.4=3.14×2.8=
0.85×1.12=0.86×5.4=0.15×2.34=
40÷14=26.37÷31=45.5÷38=
1560÷35=4.8÷2.3=1.55÷3.9=
7.2÷2.1=3.87÷7=146.4÷13=
5.63÷6.1=2.84×0.03=0.38×0.13=
26.37÷31=32÷42=2.84×0.03=
4.8÷23=0.382×0.13=4.2÷4.5=
列竖式计算
1.64+2.35=8.65-6.31= 28.448÷14= 0.58×250= 12.5+3.6=10.88÷34= 10-7.64= 1.86×7= 13.88-6.29= 926×0.15= 8÷500=26.3+7.93= 23×7.06=100.2-2.28= 44÷9(精确到百分位)
三、计算(能简便的用简便方法计算)
8×25×1.25×16
4.04×250
45.55-(6.82+15.55)
3.2×99+3.24.8×39+61×4.834.52-17.87-12.23
2.5×56+4.5×65489×101-4894.57+3.17+3.43+5.83
4.6×56+48×4.6-4.6×4
竖式计算:
18÷24=43.68÷26=25.3÷0.88=
0.1575÷3.15=0.612÷1.8=16.787÷0.28
(保留一位小数)
1、 算下面各题
2.36×0.222.8×4.583.57÷4.2 82.8÷36
45×2.463.6÷0.24 382.5÷45 6.4×5.48
2、 简便计算
3.6×2.5+7.5×3.62.5×1.20.125×32 4.3×0.96.5×1023.25×99+3.25
18÷24= 43.68÷26=25.3÷0.88=
0.1575÷3.15= 0.612÷1.8=16.787÷0.28