①13.95(9.85)
②
③×(15×)÷3.75
④
25.7-5.07=
0.42-0.22=
5分钟:4小时=
23.8+2.4= 6÷ 0.12= 0.04×25= 675-299=
3÷= 4.5×=
24×0.5= 7.2÷0.08= 36×75%= 4÷9=
÷ = - = + × = + - + =
①(+)×24
③×+×62.5%
④1-(-)
⑤÷+×7
⑥36××