例如:7=2+2+3。你能把下面的奇数写成三个质数的和吗?
9=++
11=++
13=++
15=++
8.333…
1.85÷1.021.85
2.85÷0.62.85×0.6
1.35÷0.231.35
4.8÷0.014.8×100
5.7÷4.951
(2.1+0.54)÷0.2
7.4×0.56+0.44×7.4
9.4×10.1
100÷(1.25÷1.5)
3.2a﹣0.2a=
2.8+3.5=
10﹣2.3=
0.25×40=
0.45÷0.3=
1.1×0.9=
1.6÷0.1=
1.5÷0.05=
÷3= 1+40%=
:8= 0.62= 0.8×0.25= 10-0.01= ( )×0.4=1