直接写出得数.
0.72÷0.09= 25÷20%= 98×101= 398+199= (25×0.25)×8=
2.9×4×0.5= 2.7÷= 28÷7= (2.4+3)×= 16÷8=
(+0.12)÷4= 1×12﹣12×= 7÷7= 4.4﹣4= 7.75﹣(5.8﹣1)=
(11.9+17.1)×=