4.4×4= 7.88-0.78= 24.8÷8=
3.8+65= 5+5.05÷5= 1÷4+4=
1.8×0.3÷1.8×0.3= ( )÷0.15=75÷( )
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