脱式计算(1)135+980÷7 (2)(430﹣216)×7 (3)45×8÷4 (4)728﹣276÷3(5)35+15×11 (5B)25×4+372 (6)12×24+46 (6B)305÷(213﹣208)(7)52×(36÷3) (7b)98×4﹣276 (8)42×11﹣368 (8b)(60+70)×3.
用简便方法计算 (1)0.13×+×13% (2)18×25%+68×25%+14÷4.
用简便方法计算 8.16+5.49+2.84+4.51 1.29+3.7+2.71+6.3 12.98﹣(6.37+3.98) 36.9﹣10.47+3.1﹣10.53.
用简便方法计算下面各题. 18.5×30 34.5﹣8.9﹣9.9﹣10.9 (8﹣0.8)×125 3.5×1.02+35×0.098.
68×34+68×67﹣68.
26×49+26.