直接写出得数.= 1.8×0.05= ÷6=12×12%= ×7÷×7= (0.25+)×÷=
脱式计算,能简算的要简算47×2.8+52×2.8+2.8 37.6﹣4.87﹣1.1331﹣[0.5×(6﹣5.7)+18].
(125×125)×8.
简算: 9000÷125÷80.125×5.6+×2.4.
295÷0.25÷4.
9×99+99.