小数加减乘除法简便运算练习题.docx
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小数加减乘除法简便运算练习题
小数简便运算练习
(一)
班级姓名得分
4.8+8.63+5.2+0.375.93+0.19+2.811.76+0.195+3.24
2.35+1.713+0.287+7.651.57+0.245+7.436.02+3.6+1.98
0.134+2.66+0.8661.27+3.9+0.73+16.17.5+4.9-6.5
3.07-0.38-1.621.29+3.7+2.71+6.38-2.45-1.55
3.25+1.79-0.59+1.7523.4-0.8-13.4-7.20.32×403
3.2+0.36+4.8+1.641.23+3.4-0.23+6.60.25×36
12.7-(3.7+0.84)36.54-1.76-4.540.25×0.73×4
7.6×0.8+0.2×7.60.85×1990.25×8.5×4
1.28×8.6+0.72×8.612.5×0.96×0.810.4-9.6×0.35
0.8×(4.3×1.25)3.12+3.12×9928.6×101-28.6
- 1 -
(4.23+6.17)×0.80.86×15.7-0.86×14.72.4×102
14-7.32-2.682.64+8.67+7.36+11.332.31×1.2×0.5
(2.5-0.25)×0.49.16×1.5-0.5×9.163.6-3.6×0.5
4.5÷1.84.2÷3.5930÷0.6÷5
63.4÷2.5÷0.44.9÷1.43.9÷(1.3×5)
(7.7+1.54)÷0.72.5×2.42.7÷45
0.35×1.25×2×0.832.4×0.9+0.1×32.415÷0.25
70÷2815÷(0.15×0.4)4.25÷2.5×9.9+0.17
小数简便运算练习
(二)
班级姓名得分
- 2 -
4.02+5.4+0.985.17-1.8-3.213.75-(3.75+6.48)
3.68+7.56-2.687.85+2.34-0.85+4.6635.6-1.8-15.6-7.2
3.82+2.9+0.18+9.19.6+4.8-3.67.14-0.53-2.47
5.27+2.86-0.66+1.6313.35-4.68+2.6547.8-7.45+8.8
0.398+0.36+3.6415.75+3.59-0.59+14.2542.5-(6.07+1.13)
73.8-1.64-13.8-5.3666.86-8.66-1.340.25×16.2×4
3.72×3.5+6.28×3.536.8-3.9-6.1 25.48-(9.4-0.52)
4.8×7.8+78×0.523.6×1026.4×0.25+3.6÷4
32+4.9-0.94.8-4.8×0.5(1.25-0.125)×8
4.8×100.156.5×9.9+56.57.09×10.8-0.8×7.09
4.2÷3.5320÷1.25÷818.76×9.9+18.76
3.52÷2.5÷0.44.78÷0.2+3.443.9-4.1+6.1-5.9
- 3 -
0.49÷1.41.25×2.5×323.6-0.6×2
3.65×10.13.6-3.6×0.815.2÷0.25÷4
5.6÷3.59.6÷0.8÷0.44.2×99+4.2
0.89×100.1146.5-(23+46.5)17.8÷(1.78×4)
5.83×2+4.27(45.9-32.7)÷8÷0.1259.7×99+9.7
4.36×12.5×815.6×13.1-15.6-15.6×2.10.65×101
27.5×3.7-7.5×3.78.54÷2.5÷0.43.83×4.56+3.83×5.44
小数乘法简便计算练习题
班级姓名
小数乘法的简便计算的方法:
1、乘法交换律与结合律、分配率的运用。
(整数的运算定律在小数中同样适用)
2、表面上看来,左右两边没有相同的因数,不能使用乘法分配律。
我们可以通过变一
变,分一分的方法找出相同因数再运用乘法分配律进行计算
- 4 -
0.25×8.5×412.5×0.96×0.80.25×0.73×44.36×12.5×8
0.25×16.2×41.25×2.5×323.2×0.25×12.50.25×36
(1.25-0.125)×84.8×10.13.6×1020.39×199
0.32×4033.65×10.10.85×9.93.72×3.5+6.28×3.5
15.6×2.1-15.6×1.14.8×7.8+78×0.5256.5×99+56.5
7.09×10.8-0.8×7.091.87×9.9+0.1874.2×99+4.2
3.8×4.56+3.83×5.449.7×99+9.727.5×3.7-7.5×3.7
3.14×0.68+31.4×0.0327.2×0.2+2.4×1.45.4×11-5.4
7.74×(2.8-1.3)+1.5×2.263.9×2.7+3.9×7.312.7×9.9+1.27
2.3×16+2.3×23+2.33.65×4.7-36.5×0.37101×0.87-0.91×87
46×57+23×8610.7×16.1-15.1×10.77.6×0.8+0.2×7.6
1.28×8.6+0.72×8.610.6×0.35-9.6×0.358.9×1.010.65×101
48×0.56+44×0.480.279×343+0.657×2790.264×519+264×0.481
9.16×1.53-0.053×91.60.125×9612.5×10.8(20-4)×0.25
- 5 -
45×21-50×2.145×1.58+5.5×15.825×7.3×0.4
小数乘法的简便运算
姓名学号成绩
一、乘法交换律与结合律的运用。
4.56×0.4×2.512.5×2.7×0.812.5×32×0.25
2.5×3212.5×5625×0.36
二、乘法分配律的运用。
0.25×10.412.5×8.899×0.35
3.7 × 1.8 - 2.7 × 1.895.7 × 0.28+ 6.3× 0.28 - 0.28 × 21.08 × 9 +
1.08
三、比较乘法结合律与分配律在简便运算时的区别( 下面各题用不同的方法简算)。
12.5×8812.5×880.25×480.25×48
- 6 -
四、变一变,能简算。
表面上看来,左右两边没有相同的因数,不能使用乘法分配律。
48×0.56+44×0.480.279×343+0.657×2790.264×519+264×0.481
9.16×1.53-0.053×91.6314×0.043+3.14×7.2-31.4×0.15
五、用自己喜欢的方法做一做。
53×10.14.2×6.51+3.49×4.225×7.3×0.4
0.125×9612.5×10.8
(20-4)×0.25
45×21-50×2.145 ×1.58+5.5×15.89.99 ×2.22+3.33×
3.34
3.7×1.4×0.0572×0.81+10.41.4×25+3.45
1.5×1021.25×0.7×0.82.7×3.7+0.37×73
8.7×990.8 ×(12.5 – 1.25)1.25 ×0.4×80×
2.5
5×1.03×0.232×1.250.45×99
- 7 -
① 甲有存款 4000 元,乙有存款 2400 元,乙从存款中取出一些后,甲的存款正好是乙
现在的 5 倍。
乙取出多少元钱?
② 有一堆煤,如果用甲种车一次运完,需要 36 辆; 如果用乙种车一次运完,需要 45
辆。
已知甲种车比乙种车每辆多运 1.5 吨。
问这批煤共有多少吨?
小数乘法简便计算
6.9+4.8+3.147.8-7.45+8.80.398+0.36+3.649.6+4.8-3.6
5.17-1.8-3.24.02+5.4+0.983.68+7.56-2.680.25×16.2×4
5.27+2.86-0.66+1.6373.8-1.64-13.8-5.3615.75+3.59-0.59+14.25
- 8 -
7.85+2.34-0.85+4.6635.6-1.8-15.6-7.23.82+2.9+0.18+9.1
0.456+6.22+3.7815.89+(6.75-5.89)13.75-(3.75+6.48)3.6×102
66.86-8.66-1.34
(1.25-0.125)×8
13.35-4.68+2.65
7.14-0.53-2.47
- 9 -
3.72×3.5+6.28×3.536.8-3.9-6.14.8×7.8+78×0.5256.5×9.9
+56.5
15.6×13.1-15.6-15.6×2.14.8×100.17.09×10.8-0.8×7.0932 +
4.9-0.9
25.48-(9.4-0.52)4.2÷3.5320÷1.25÷818.76×9.9
+18.76
3.52÷2.5÷0.43.9 - 4.1 + 6.1 - 5.95.6÷3.5
9.6÷0.8÷0.4
4.2×99 + 4.217.8÷(1.78×4)0.49÷1.4
1.25×2.5×32
3.65×10.115.2÷0.25÷40.89×100.1146.5-(23+
46.5)
10
3.83×4.56 + 3.83×5.444.36×12.5×89.7×99 + 9.7
8.9×1.01
27.5×3.7 - 7.5×3.78.54÷2.5÷0.40.65×101
3.2×0.25×12.5
(45.9-32.7)÷8÷0.1253.14×0.68+31.4×0.032
5.6÷1.25÷0.8÷2.5÷0.4
7.2×0.2+2.4×1.47.74×( 2.8 - 1.3 )+1.5×2.263.9×2.7+
3.9×7.3
18-1.8÷0.125÷0.812.7×9.9+1.27
21×(9.3-3.7)-5.615.02-6.8-1.025.4×11-5.4
2.3×16+2.3×23+2.39.43-(6.28-1.57)3.65×4.7-36.5×0.37
11
46×57+23×8613.7×0.25-3.7÷42.22×9.9+6.66×6.7
101×0.87-0.91×8710.7×16.1-15.1×10.70.79×199
4.8+8.63+5.2+0.375.93+0.19+2.811.76+0.195+3.24
2.35+1.713+0.287+7.651.57+0.245+7.436.02+3.6+1.98
0.134+2.66+0.8661.27+3.9+0.73+16.17.5+4.9-6.5
3.07-0.38-1.621.29+3.7+2.71+6.38-2.45-1.55
3.25+1.79-0.59+1.7523.4-0.8-13.4-7.20.32×403
12
3.2+0.36+4.8+1.641.23+3.4-0.23+6.60.25×36
12.7-(3.7+0.84)36.54-1.76-4.540.25×0.73×4
7.6×0.8+0.2×7.60.85×1990.25×8.5×4
1.28×8.6+0.72×8.612.5×0.96×0.810.4-9.6×0.35
0.8×(4.3×1.25)3.12+3.12×9928.6×101-28.6
0.86×15.7-0.86×14.72.4×1022.31×1.2×0.5
14-7.32-2.682.64+8.67+7.36+11.3370÷28
(2.5-0.25)×0.49.16×1.5-0.5×9.163.6-3.6×0.5
13
63.4÷2.5÷0.44.9÷1.43.9÷(1.3×5)
(7.7+1.54)÷0.72.5×2.42.7÷4515÷(0.15×0.4)
0.35×1.25×2×0.832.4×0.9+0.1×32.415÷0.25
4.5÷1.84.2÷3.5930÷0.6÷5
小数乘除法简便计算专项练习
班级:
姓名:
一、计算
1.25×3.2×0.254.7×1.25×1.6
1.25×88
1.25×6.4×0.254.6 ×0.35+4.6×0.65
14
2.55×1.5+1.5+6.45×1.52.95×101-2.95
12.5×5×0.16
3.2×10.10.52×10510.01 ×4.5
59÷0.25
1.8×0.9+0.185.4×0.68+3.4×2×0.468.9
×9.9+11×0.99
(1.25+0.25)×1623.9-0.6×0.6-0.64
3.7×0.44×2.5
9.73÷12.5÷0.87.8×4.86÷3.91.9×8.8
+0.88
28.9×4÷2890.7777 ×0.7+0.1111×2.1
888×1.6+222×3.6
92×0.9+7.24.8×7.8+78×0.521.87 ×
9.9+0.187
3.14×0.68+31.4×0.0327.2 ×0.2+2.4×1.44.2 ×
15
98+8.4
7.74×(2.8-1.3)+1.5×2.2612.7 ×9.9+
1.27
2.3×16+2.3×23+2.33.65 ×4.7-36.5×0.37
4.6×57+2.3×862.22 ×9.9+6.66 ×6.7101 ×0.87-0.91 ×
87
二、填空
1、已知 25.16÷0.37=68,直接写出下列各式的得数。
251.6÷3.7=0.2515÷0.37=2.516÷37=
25.16÷0.037=2.516÷0.037=25.16÷()=6.8
2、1 吨 36 千克=()吨84 分=()小时
15 千克 15 克=()千克36 小时=()天
3、将 3.18÷1.8、3.18÷0.8、3.18÷1.2、3.18÷1、3.18÷0.99 从小到大的顺序排列
()
4、7.07÷0.3 商是 23.5,余数是()
5、根据 212×34=7208,在()里填上合适的数。
2.12×34=()()×34=0.7208
2.12×()=7.20821.2 ×0.34=()
0.0212×340=()0.212×()=72.08
16
6、两个数相乘,小马虎把第一因数 30.95 中的 9 写成了 6,结果积比正确答案
少 0.81,那么另一个因数是多少?
五年级数学简便计算练习卷
下面各题怎样算简便就怎样算。
(1)小数加减法计算
6.9+4.8+3.10.456+6.22+3.7815.89+(6.75-5.89)
4.02+5.4+0.985.17-1.8-3.213.75-(3.75+6.48)
3.68+7.56-2.687.85+2.34-0.85+4.6635.6-1.8-15.6-7.2
3.82+2.9+0.18+9.19.6+4.8-3.67.14-0.53-2.47
5.27+2.86-0.66+1.6313.35-4.68+2.6573.8-1.64-13.8-5.36
47.8-7.45+8.80.398+0.36+3.6415.75+3.59
-0.59+14.25
66.86-8.66-1.3436.8-3.9-6.132+4.9-0.9
25.48-(9.4-0.52)3.9-4.1+6.1-5.915.02-6.8-1.02
32+4.9-0.9146.5-(23+46.5)9.43-(6.28-1.57)
4.8+8.63+5.2+0.375.93+0.19+2.811.76+0.195+3.24
2.35+1.713+0.287+7.651.57+0.245+7.436.02+3.6+1.98
0.134+2.66+0.8661.27+3.9+0.73+16.17.5+4.9-6.5
3.07-0.38-1.621.29+3.7+2.71+6.38-2.45-1.55
17
3.25+1.79-0.59+1.7523.4-0.8-13.4-7.23.2+0.36+4.8+1.64
1.23+3.4-0.23+6.612.7-(3.7+0.84)36.54-1.76-4.54
14-7.32-2.682.64+8.67+7.36+11.33
(2)小数乘法计算
0.25×16.2×4(1.25-0.125)×83.6×102320÷1.25÷8
3.72×3.5+6.28×3.514.8×7.8+78×0.520.8×100.1
5.6×13.1-15.6-15.6×2.14.2÷3.57.09×10.8-0.8×7.09
18.76×9.9+18.763.52÷2.5÷0.456.5×9.9+56.5
515.6×13.1-15.6-15.6×2.14.8×7.8+78×0.524.2÷3.5
4.8×100.156.5×9.9+56.57.09×10.8-0.8×7.09
18.76×9.9+18.763.52÷2.5÷0.4320÷1.25÷8
9.6÷0.8÷0.44.2×99+4.215.2÷0.25÷40.89×100.1
17.8÷(1.78×4)0.49÷1.41.25×2.5×323.65×10.1
3.83×4.56+3.83×5.449.7×99+9.73.14×0.68+31.4×0.032
27.5×3.7-7.5×3.78.54÷2.5÷0.40.65×1013.2×0.25×12.5
(45.9-32.7)÷8÷0.1255.6÷1.25÷0.8÷2.5÷0.44.36×12.5×8
7.2×0.2+2.4×1.48.9×1.017.74×(2.8-1.3)+1.5×2.26
3.9×2.7+3.9×7.318-1.8÷0.125÷0.812.7×9.9+1.27
21×(9.3-3.7)-5.65.4×11-5.44.5÷1.84.2÷3.5
18
63.4÷2.5÷0.44.9÷1.43.9÷(1.3×5)930÷0.6÷5
7.7+1.54)÷0.72.5×2.42.7÷4515÷(0.15×0.4)
0.35×1.25×2×0.832.4×0.9+0.1×32.415÷0.25
(2.5-0.25)×0.49.16×1.5-0.5×9.163.6-3.6×0.570÷28
0.8×(4.3×1.25)3.12+3.12×9928.6×101-28.6
0.86×15.7-0.86×14.72.4×1022.31×1.2×0.5
7.6×0.8+0.2×7.60.85×1990.25×8.5×44.6÷3.5
1.28×8.6+0.72×8.612.5×0.96×0.810.4-9.6×0.350.25×36
0.25×0.73×40.32×40346×57+23×860.79×199
13.7×0.25-3.7÷42.22×9.9+6.66×6.72.3×16+2.3×23+2.3
101×0.87-0.91×8710.7×16.1-15.1×10.73.65×4.7-36.5×0.37
4.8+8.63+5.2+0.375.93+0.19+2.811.76+0.195+3.24
2.35+1.713+0.287+7.651.57+0.245+7.436.02+3.6+1.98
19
0.134+2.66+0.8661.27+3.9+0.73+16.17.5 +4.9-6.5
3.07-0.38-1.621.29+3.7+2.71+6.38-2.45-1.55
3.25+1.79-0.59+1.7523.4-0.8-13.4-7.212.7-(3.7+0.84)
3.2+0.36+4.8+1.641.23+3.4-0.23+6.636.54-1.76-4.54
0.25×0.73×40.25×36
0.32×403
7.6×0.8+0.2×7.60.85×1990.25 ×8.5×4
1.28×8.6+0.72×8.612.5×0.96×0.810.4-9.6×0.35
20
0.8×(4.3×1.25)3.12+3.12×9928.6×101-28.6
(4.23+6.17)×0.80.86×15.7-0.86×14.72.4×102
14-7.32-2.682.64+8.67+7.36+11.332.31×1.2×0.5
(2.5-0.25)×0.49.16×1.5-0.5×9.163.6-3.6×0.5
(8+0.8)×1.250.25×4.4-0.25×0.42.36×101
4.5÷1.84.2 ÷3.5930 ÷0.6÷5
63.4÷2.5÷0.44.9÷1.43.9÷(1.3×5)
(7.7+1.54)÷0.72.5×2.42.7÷45
21
0.35×1.25×2×0.8