题目内容
1.2×2.5+0.8×2.5=(________+________)×________.
1.2 0.8 2.5
分析:1.2×2.5+0.8×2.5,运用乘法分配律进行简算.
解答:1.2×2.5+0.8×2.5,
=(1.2+0.8)×2.5,
=2×2.5,
=5;
故答案为:1.2、0.8、2.5.
点评:此题考查的目的是理解乘法分配律的意义,并且能够灵活运用乘法分配律进行简便计算.
分析:1.2×2.5+0.8×2.5,运用乘法分配律进行简算.
解答:1.2×2.5+0.8×2.5,
=(1.2+0.8)×2.5,
=2×2.5,
=5;
故答案为:1.2、0.8、2.5.
点评:此题考查的目的是理解乘法分配律的意义,并且能够灵活运用乘法分配律进行简便计算.
![](http://thumb2018.1010pic.com/images/loading.gif)
练习册系列答案
相关题目
3.3×2= | 2.4×0.5= | 0.6×0.9= | 0.2×0.3= |
0.39+0.61= | 10-7.2= | 0.88+1.1= | 0.75×4= |
11-1.5= | 4.48-4= | 7.8-0.8= | 2.8×5= |
4×0.3= | 4×0.25= | 3.2+1.6= | 10.6-5.2= |
0.32+1.68= | 8×125= | 7.28+7= | 0.8+39.2= |
43+0.01= | 0.4×2= | 1.5×6= | 1×0.04= |
1.53-0.5= | 1.5-0.6= | 0.3+1.5= | 95÷5= |
0.65+4.35= | 14-7.4= | 11.2-9.8= | 4.4×2= |
35-25= | 56-26= | 45+15= | 35-15= |
38+28= | 15+25= | 12+12= | 47-27= |
13+23= | 1-12= | 14+14= | 212+312= |
14-0= | 610-510= | 1-23= | 0+56= |
78-38= | 29+29= | 58-48= | 15+45= |
0.9×125×8= | 5.75+1.37+4.25= | 0.43×10+5.7= | 62-2.8-1.2= |
2.7×4+2.7×6= | 0.25×0.5×4= |
4.7+2.3= | 4.5×2= | 6.9-2.5= | 7.2×0.8= |
6×3.4= | 0.62-0.32= | 1.4×0.5= | 0.75×100= |
0.02×0.5= | 3.6÷0.3= | 6.3÷7= | 5.6÷100= |
0.75÷0.25= | 0.125×8= | 4.8÷0.3= | 0.96÷2= |
0.56÷28= | 0.36÷0.4= | 0.64÷0.8= | 0.72÷3.6= |
3.6÷24= | 0.8×1.1= | 7.2+12.8= | 46.7-3.8= |
12.8÷4= | 5.2÷13= | 12.5÷5= | 1.64÷41= |
10÷20= | 24÷15= | 8.65×10= | 0.35×0.6= |
3.08×0.01= | 4.95×1000= | 6.9×0.1= | 0.4×0.5= |
2.4÷0.8= | 10.8÷9= | 9.6÷0.8= | 0.108÷2= |
4.95÷0.9= | 9.65÷0.1= | 0.325×100= | 2.5×8= |
0.56÷0.7= | 0.125×4= | 3.28×0.1= | 3.9÷0.13= |
7.2×0.1= | 0.01×0.1= | 0.25×0.4= | 1.6÷0.8= |
1÷2.5= | 1.25×0.8= | 3.2÷0.04= | 0÷1.7= |
0.22×102= | 9.6÷0.8= | 5×0.24= | 4.5-0.05= |
3.9÷0.13 | 16.5÷0.5= | 5×0.12= | 24×0.5= |
4.8×0.5= | 2.8+4.2= | 0.84÷2.1= | 5÷0.25= |
7.8÷0.01= | 5.4÷0.6= | 3.2÷5= | 7×0.62= |
0.56÷0.8= | 7.4-2.8= | 0.18÷0.2= | 0.16÷8= |
4.5×0.02= | 8+7.2= | 1.2×30= | 0.012×0.2= |
7.3×0.3= | 9÷6= | 3.6÷0.12= | 7.8÷0.6= |
2÷5= | 4.5+5= | 0.3÷0.6= | 0.96÷0.2= |
10.5×0.4= | 7.3+0.27= | 8×0.125= | 0.54÷0.6= |
0.61+0.39= | 0.56÷28= | 10÷20= | 4.08÷0.4= |
11-9.4= | 0.8×0.11= | 0.72+12.8= | 5.6÷0.01= |
2.3×100= | 0.75×100= | 0.108÷2= | 10.8÷9= |
0.7÷0.8= | 16-5.07= | 4.2×0.4= | 0.72×6= |
12÷0.5= | 5.2×0.4= | 12.2÷0.2= | 5.6÷100= |
0.41+3.7= | 0.02×0.5= | 7.2-0.8= | 1.4×0.5= |
84÷0.21= | 0.75÷0.25= | 2.5×16= | 0.108÷2= |
1.75+32.5= | 16-5.07= | 5.2÷13= | 1.64÷41= |
1.02×0.2= | 0.26×0.3= | 8.4×0.02= | 1.29×6= |
0.8×0.05= | 12.6÷0.03= | 8.71÷0.1= | 21÷0.21= |
0.8×0.13= | 0.34÷17= | 8.08÷0.4= | 0.5×2.2= |
1.24÷4= | 3.27+0.63= | 5.02×0.3= | 0.3×0.5= |
6.4÷4= | 7.2÷1.8= | 0.7÷0.35= | 0.72÷1.44= |
0.48÷0.04= | 1.25÷2.5= | 5.5+55= | 16.8÷8= |
0.54+2.2= | 3.5-0.05= | 2÷0.02= | 0.25×40= |
1.5×0.6= | 0.32÷0.8= | 12.25÷0.5= | 73.5×0.1= |
46.5+52.5= | 0.45×102= | 1.25×88= | 2.64+3.85+1.54= |
8×1.25= | 5.6÷3.5= | 4.2÷0.7÷6= | 0.4×8.6×25= |
0.27÷0.3= | 2.5×101= | 0.65×101-0.65= | 2.6×7÷2.6×7= |