3.4+1.3=
4.14+5=
7.28-0.28=
16×0.01=
4.8÷8=
3.5÷0.7=
2.5×8=
0.8×4=
①22.8÷4=
②25.73÷8.3=
③6.43÷0.09≈
①
②
③
……