直接写出得数.0÷270= 25×8= 72+26= 95﹣36=320×0×5= 2000÷4= 210÷3= 90×80=
灵活计算. 4.2﹣1.38+5.8﹣3.62 2÷﹣÷2 452÷20+109×43 9.05×990+90.5.
用简便方法计算. 7.85+6.76+2.1518.43﹣3.76﹣7.24 21.65+(4.8﹣3.65) 9.64﹣(4.64﹣1.23)2.7+17.6+3.3﹣5.69.87﹣3.5+2.13﹣8.5.
脱式计算,能简算的要简算. (1)10.5+0.5÷0.5 (2)105×7.3﹣7.3×4﹣7.3 (3)29.07﹣22.78÷3.4 (4)4.8×0.25 (5)0.8×(12.5﹣1.25)
用简便方法计算 8.8×0.1252.5×1.25×327.6×5.3+3.7×7.6 37÷0.25÷43.85×101﹣3.85(23+4.6)÷2.3.
6.36﹣2.22+2.64﹣0.78 12.5×(8﹣0.8)×4 1.25×6.4×0.25×0.2 7.5×10﹣7.5×6.5+7.5×0.5 (2.6×1.5+1.1)﹣2.5×8 8÷[(40.75﹣9.5)×0.4]﹣0.6.