28.4×13﹣325.62÷8.1
312.56﹣13.49﹣(16.51﹣81.44)
9.7+3.6÷0.8×1.3﹣1.3
45.8×7.36+45.8+1.64×45.8
10﹣(0.81+0.9×5.1)÷1.2
[9.7+(7.2﹣5.52)÷1.4]×0.6.
计算下面各题,能简算的要简算.
2.25×4.8+77.5×0.48 63×﹣
×63 4÷
×(
﹣
)(
+
)×
×
.
脱式计算下面各题,怎样简便就怎样算.
5.2×39.83.8×1.4+6270.4÷(41﹣28.5)÷0.8.
计算
(1)0.625×4+3÷0.4(2)4×3.09×0.25(3)(27.5×0.75﹣3.405)÷0.8
(4)4.02÷[(1﹣0.4)÷0.1](5)(50﹣20×0.1)÷0.01(6)18.75﹣0.43﹣4.57.
脱式计算.(能简算的要简算)
28.76﹣4.37﹣5.63
58×0.37+0.37×42
8.27﹣5.84+1.73﹣2.16
516÷(36×11﹣353)