①x+2.4=5.5
②9.5x-5x=18
③6-x=1.8
④x÷0.6﹦3.5
⑤*3×1.5+2x=11.5
⑥*x-3.5+4.5=12
9.5+4.2=
0.8×1.3=
14.1÷3=
=
8.1-2.7=
1.4×0.3=
7.9+0.1=
2.4×5=
1- =
2- = =
①5x-=0.875 ②+=1
39 48 64 31 73 49 81 78 120 29
奇数: 偶数:
质数: 合数: