数学优化设计五年级上册数学口算题

2020年11月12日发(作者：安仁裕)
1
1. 一个数乘以0.5等于这个数除以2，即： a × 0.5 = a ÷ 2 = a ×
1
2

1
2. 一个数乘以0.1等于这个数除以10，变成了原来的十分之一，即：a× 0.1= a ÷ 10 = a ×
10


4.25×4= 0. 07×0.5= 33×0.04= 6.5×4=
2.3×0.06= 15×0.08= 0.09×0.9= 4.7×0.1=
54×0.8= 1.6
17.5×0.01= 3.2
6×6.5= 3.6
0.66×0.3= 2.5
4.6×0.4= 3
0.75×0.4= 23
4.73×10= 0
3.3×0.5= 60
4-1.4= 82-7.2= 19+9.1= 4.1-0.89=
5.68+0.42= 6.1-5.1= 0.72- 0.24= 0.8+0.18=
0.89-0.25= 1-0.98= 0.048+0.52=
19.9+11.1=
75÷10=
1.32×8=
0.9×0.3=
0.13×7=
4×0.3= 430-250= 0.17+0.06= 1.02-0.09=
7200÷800= 0.17+0.6= 0.83-0.6=
0.98-0.09= 0.2+0.78=
0.15+0.7= 670+250= 10.2+0.2= 9.2-6=
×0.03= 0.8
×0.5= 25
×0.7= 6.5
×0.4= 7.7
×0.09= 2.2
×0.4= 0.32
×23.5= 0.25
×0.8= 3.4
187÷1000=
0.96÷8=
0.7×8=
3.5×0.2=
0.21×100=
×0.9= 0.6
×0.4= 12.5
×0.4= 8.5
×0.8= 0.012
×0.05= 4.1
×100= 5.5
×4= 7.2
×0.6= 0.125
0.8×7=
10.3×2=
2.01×0=
0.7×4=
600×0.7= 10.2+0.02=
×100=
×0.8=
×0.2=
×20=
×0.6=
×2=
×0.5=
×8=
5×400=
0.081×10=
1.5×7=
5×0.6=
10×0.05=
0.05×4=
17×300=
1+3.89=




2
8500÷500= 3.2-3.2= 3.7+2.3= 25×100=
3.2-0.32= 2+2.8= 380-290= 0.35+0.5=
0.35+0.63= 3500÷70= 3.1+3= 3.8+0.38=
7500÷250= 3.8+1= 0.95-0.05= 450+780=
3.1+0.3= 3+0.3= 630÷9= 4.5-0.4=
9.5-5=
3.5+2.4= 1-0.95= 0.3+0.27= 0.47+0.13=
4.5+4= 4-0.6=
0.74+0.16=
0.53÷100= 5.1+2.3=
0.52+0.4=
0.6-0.37=
0.5×1000= 0.82+0.3= 13.5+6.5=
1.2-0.8= 21.6-12.6=
0.76+0.14=
30×100= 0.92-0.2= 3.5+4.8=
5+0.07= 1-0.61=
3.7+0.33=
5.8-3.6= 0.52+0.4= 6.45+5.5=
3.4-2.8= 9.53-1.53=
9.5-7.3= 7.2+0.8= 7.82+0.3= 8.8-6.7=
9.5-7.3= 1-0.95= 3.4-2.8= 0.96-0.35=
9.53-1.53= 0.25+0.75=
2.7+0=
0.4×50=
330×9=
23×100=
70×12=
0.052×10=
80÷1000=

12.5×8=
30×0.1=
0.95+0.05= 2.5+3.2=
125×80=
0.25×100=
63÷100= 0.83-0.5=
0.47+0.23= 0.25+0.75=
8.8-6.7= 10+0.08=
1.2-0.8= 0.83-0.5=
2.3×4=
2.6×3=
480÷40=
0.078÷10=
3.05×100=
3.5+2.4=
3.25×0=
4.1×2=
9.53-1.53= 9.5-0.5=
9.8-4.8=
3.4-2.8=
10+0.08= 1-0.75=


2.7+0.4= 0.72-0.43=

0.51+0.33= 1-0.6= 8-4.6=
4.5-1.3=




3
0.35×0.2= 7.5×0.1= 2.5×2= 0.5×10=
0.6×8= 2.8×10= 0.7×0.8= 5.6+0.4=
4.7+2.3= 4.5×2= 7.2×0.8= 6×3.4=
0.62-0.32= 0.75×100= 0.02×0.5= 3.6×0.3=
5.6×100= 0.75÷0.25= 0.125×8= 0.86÷2=
0.56÷28=
0.8×1.1= 46.7-3.8=
1.64+4.1=
4.7+2.3=
6×3.4= 0.62
0.02×0.5=
0.75÷0.25=
0.56÷28=
3.6÷12=
12.8÷4=
10÷20=
3.08×0.01=
2.4÷0.8= 10.8
4.95÷0.9= 9.65
0. 56÷0.7= 0.125
0.13=
7.2×0.1= 0.01
1÷2.5= 1.25
0.36÷0.4=

10÷20=
4.5×2= 6.9
－0.32=
3.6÷0.3=
0.125×8=
0.36÷0.4=
0.8×1.1= 7.2+12.8= 46.7
5.2÷13= 12
24÷15=
4.95×1000=
÷9= 9.6
÷0.1= 0.325
×4= 3.28
×0.1=
×0.8= 3.2
0.7×9=
12.8÷4=
24÷15=
－2.5=
1.4×0.5=
6.3÷7=
4.8÷0.3=
0.64÷0.8=
.5÷5=
8.65×10=
6.9×0.1=
÷0.8= 0.108
×100= 2.5
×0.1= 3.9
1.2÷0.8=
÷0.04= 0
3.6÷24=
5.2÷13=
0.35×0.6=
7.2×0.8=
0.75×100=
5.6÷100=
0.96÷2=
0.72÷3.6=
－3.8=
1.64÷41=
0.35×0.6=
0.4×0.5=
÷2=
×8=
÷
0.07÷0.7=
÷1.7=

4
1.4÷0.5= 1.55÷0.5= 3.15÷0.7= 1.86÷0.2=
1.04÷0.8= 0.38÷0.1= 1.36÷0.2= 1.16÷0.4=
0.12÷0.6= 0.27÷0.9= 0.48÷0.2= 8.73÷0.9=
0.72÷0.3= 0.46÷0.1= 0.22÷0.2= 3.45÷0.5=
4.62÷0.6= 1.92÷0.4= 0.9÷0.3= 5.11÷0.7=
0.35÷0.1=
3.15÷0.7=
2.64÷0.4=
1.33÷0.7=
1.54÷0.2=
7.44÷0.8=
3.69÷0.9=
0.8×7＝ 1.32
10.3×2＝ 3.5
10×0.05＝ 0.13
12.5×8＝ 0.4
2.6×3＝ 7.5
3.5×0.01＝ 9
4.1×2＝ 2.6
1×0.06＝ 0.9
10－3.52= 8.2
0.9－0.52= 3.99
3.92÷0.8=
0.98÷0.7=
7.56÷0.9=
1.18÷0.2=
8.28÷0.9=
2.48÷0.8=
2.28÷0.3= 0.25
×8＝ 1.5
×0.2＝ 0.9
×7＝ 0.7
×50＝ 3.25
×0.1＝ 0.45
×0.5＝ 0
×3＝ 1.25
×0.3＝ 9
＋1.8= 0.2
×1= 4
4.32÷0.9=
1.8÷0.6=
1.19÷0.7=
0.09÷0.1=
3÷0.5=
0.75÷0.5=
×0.4= 1.6
×7＝ 0.7
×0.3＝ 5
×4＝ 0.05
×0＝ 2.3
×0.2＝ 4.1
×9.8＝ 3.9
×8＝ 7.5
×0.5= 2.5
×0.4= 0.22
×0.3= 30
0.24÷0.8=
1.76÷0.4=
1.53÷0.9=
0.21÷0.1=
1.71÷0.3=
1.92÷0.8=
÷0.8=
×8＝
×0.6＝
×4＝
×4＝
×2＝
＋0.39＝
×0.1＝
×0.4=
×4=
×0.1=



5
0.35×0.2= 1－0.08= 4.8＋5.2= 2.01×0=
2.4×5= 1.25×8=
2.5×4×12= 10-1.8-7.2=
7.82－7.2= 2.19＋9.1= 10.1－0.89= 6.8＋0.42=
0.8＋0.18= 0.72－0.24= 8.1－5.1= 0.89－0.25=
1－0.98= 0.48
5.6÷1.4＝ 0.28
0.21×100= 3.4
0.3×3.6＝
0.05×7＝
0.02×0.1＝
100-35.22＝
0.22×4＝
0×3.52＝
0.43+3.57=
16.5×10=
3.215×100=
0.6×0.8
12.5×8=
0.16×5 ﹦
0.7÷0.01 =
6.6÷0.66 =
＋0.52= 0.5×40= 0.125
÷1.4＝ 0.1÷0.5=
－1.4= 0.45×2.5＝
0.3×0.3＝ 10×0.07＝
0.92×0.4＝ 0.2×0.26＝
1.2×0.3＝ 0.2×0.4＝
2.3×4＝ 2.5×0.4＝
3.25×0＝ 0.9－0.52＝
12.5×8＝ 8÷10 =
0.9×0.8= 1÷0.5=
0.56×100= 3.78×100=
0.8×10= 4.08×100=
3×0.9= 2.5×0.4=
50×0.04= 80×0.3 =
＋2.2 = 9.6÷0.6 =
2.5×0.4 = 12－3.9=
5.37×0+4.63 = 3.9＋2.03＝
×8=
3.88÷0.4=
0.8×1.25＝
0.3×1.4＝
0.14×4＝
8.2＋1.8＝
2.4×5＝
3.99×1＝
1.47÷0.7=
0.96÷3=
4÷0.8 =
1.1×0.2 =
3.6×0.4=
1.1×9=
1.2×0.5-0.4 =
1.25×8÷1.25 =
4.2÷3.5＝













1.78


6
1.6+2.4×0.3 = 2.14－0.9＝ 2.7＋7.3= 0.3×0.3=
7.2＋2.8＝ 0.9÷0.01＝ 12÷0.3= 2.87÷0.7＝
13÷4＝ 0.96÷0.3＝ 1.5×0.4＝ 7÷0.25＝
2.5×0.7×0.8= 8－2.5＝ 16÷1.6＝ 5.6×1.01=
8×0.25＝ 0.36＋0.64＝ 64.32÷16＝ 4.2÷0.1＝
72.8÷0.8＝ 8.4÷4.2＝ （1.5＋0.25）×4＝ 22.5×4=
13.8＋9.9＝ 2.4×2.5＝ 0.05×0.8＝ 2.56－0.37＝
1.25×0.8×0.5＝ 12×2.5＝ 1.23×3＝ 3.2÷1.6=
3.5＋3.5×3＝ 19.6÷2＝ 8.8÷2.2= 0.75×4＝
0.5×0.8= 8.4×0.2= 1.6×0.2＝ 7.2×0.3=
2.8×0.3= 0.9÷0.15= 1.8×0.4= 5.5÷0.55=
0.08×100= 2.2÷0.11= 5.46＋4.54= 12.5×0.8=
0.35×0.3=
1.4×5= 2.8×4= 19.6÷4=
4÷0.5= 7.5÷1.5= 10÷2.5= 3.52÷1=
1.5÷3= 2.2×6= 0.42÷7= 0.42÷0.6=
0.48÷0.8= 0.9÷0.45= 5.1÷0.17= 0.81÷9=
4.8÷0.16= 8.4÷0.4= 1.8×5= 4.5÷0.9=
2.9÷100= 1.5÷0.03= 4.4÷0.11= 9.6÷16=
1÷0.01= 4.2×5= 3÷0.5= 6.1-0.5=
0.38+4.2= 0÷3.89= 0.6×0.2= 6.4÷4=
7.2÷0.9= 4-0.18= 0.3÷0.1= 0.125×80=
7
4×2.5= 1.2÷0.04= 0.7+6.53= 3.6÷0.06=
1.25÷0.25= 1-0.75= 2.6÷1.3= 4.4+6.6=
7.4-0.54= 7.82÷0.1= 0.5×1.6= 8.4÷7=
1÷5= 0.4+0.26= 2.5×6= 5.4×6=
0.07×20= 0.45÷5= 3.5-2.9= 0.48÷0.24=
1.5÷0.03= 5.65+0.35= 3
17.3-0.8= 2.5
2.5÷5= 60
1.8×0.5= 4.5
0.29÷0.01= 1.5+0.9= 15
0.96÷0.8= 2.4
2.8×5= 0.72
187÷100= 0.9+0.28= 1
1.2+0.08= 7.2
1.2÷0.4= 0.6
15×0.3= 10
0.48÷1.2= 4.3+6.9= 1.65
1.4+2.6= 12.4
5÷2= 9.1-1.9= 0.36
2.5×4.4= 3.06
32÷0.5= 0.25-0.19= 0.4
12.5×0.8= 64
÷0.5= 2.16-1.6= 30.4
×3.2= 8.4
÷0.15= 2.4
×11= 8.1
÷0.6= 0.5
÷0.09= 0.13
×11= 0.45
÷2.5= 5.8-0.9= 3.4
÷4= 12.5
÷3= 6.6-6= 7.6
÷0.8= 3.2-2.3= 60
÷4= 0.3
÷0.5= 87-8.7=
×5= 3.6
÷0.3= 0.06
÷9= 60.3+0.67=
×6= 0.001
÷4= 4.03
×4= 0.3
÷0.15= 0.25+0.5=
÷0.3= 12-1.1=
×4= 9.5
÷0.9= 0
÷0.01= 2
×2.9=
÷4=
÷0.02=
×0.9=
÷0.1=
×0.5=
÷0.2=
÷2=
÷0.5=
×5.4=
÷4=
×0.32=
÷0.2=
8
4.16÷0.8= 5.4+6= 0.6÷5= 3.3×8=
0.3×0.3＝ 10×0.07＝ 0.3×1.4＝ 3.25×0＝
0.12×0.12＝ 0.11×0.11＝ 0.11×0.1＝ 100×0.3＝