计算:
7.5×46.7+52.3×7.5+7.5;(+
+
﹣
)×24;(2.5﹣2.5×0.6)÷0.4;
﹣(
+2.4×
)÷
;1.2+[2
÷(2﹣2.4×
)];
=
.
脱式计算.
①2.7+3.1+2.9+3.2②0.44×8.3+8.3×0.56
③12.53﹣1.35×2﹣9.3④25×32×0.5.
能简便的要简便:
(1)[10﹣(8.4﹣5)]÷0.5
(2)14.2×0.7+0.3×14.2
(3)5.7×(3.6+6.4)
(4)7.2÷4.5÷2
(5)0.8×9×200.6+7×0.4×200.6.
脱式计算,能简便的要用简算.
13.25﹣0.8+1.75﹣1.2;
2.5×99+2.5;
10.36+4.8﹣16.5÷5;
12.5×2.4.
脱式计算(能简算的要用简算)
14.6﹣4.6×2.812.5×0.4×2.5×84.2×1.25+4.8×1.25﹣1.25
5.96+13×(3.2﹣3.12)13.5×1020.17×40+0.017×600+1.7×10.