64-25= 70-26= 34×2= 120×0=
139+507≈ 703-599≈ 403×6≈ 198×5≈
1- = + = + = + =
45+45÷9= 35×0+65= 90-20×3= 5×(24-13)=
微信扫码预览、分享更方便