能简算的要简算
①9﹣0.64﹣0.36
②1.8×+2.2×25%
③6.25﹣40÷16×2.5.
用简便方法计算.
(1)2.25×4.8+77.5×0.48(2)6.68﹣3.25﹣1.75.
12.56﹣6.64﹣3.3645.5﹣(0.98+5.5) 6+7.94+6.43.75×4.8+62.5×0.48.
123.4÷4÷2548×255.8×101 1.2×25×4
46×6.8+6.8×5499×7.9+7.9 101×0.38﹣0.38.
脱式计算,能简算的要简算.
①67.5×0.52+3.25×5.2②36×(+
) ③42÷(
÷
)④3.5×[(702﹣270)÷16].