①1300÷4÷25
②7.4+3.6×4.8
③4.7×99
④1.25×2.5×32
⑤47.5÷5-4
⑥64×4.5+36×4.5
①
②
③12.5×0.32×2.5
④5÷+÷5
⑤18×()×14
⑥4.5×26+45×7.4