1.54×7.8 1.54
18.7×0.31 18.7
2.6×0.98 9.8×0.26
5.93÷0.23 5.93
10.8÷4.5 10.8
21÷1.4 21.
a+3=b+
a÷ =b÷20.
395.5×100=
2.43×1.2=
1.25×0.4=
0.001+10.099=
0.9×0.9=
4×0.2=
0.9×0.7=
1.5×0.4=
1.2×5=
3.6×0.05=
①4x﹣0.5x=0.7
②3.5×6﹣3x=11.4
③5(x﹣3)=2
④x+2.5=4.8
⑤4.5x+3.5x=64.8
⑥7x÷3=8.19.