赚现金
37+56+63+44.
1÷8×9.9+1.9×0.125﹣0.125 0.64×125×2.5.
9.9÷0.125÷8 1.25×0.32×2.5 36.3×4.5+6.37×45 9999+999+99+9.
98+4×980+59×98.
计算:98×91.
667×668×669﹣666×668×670= .
脱式计算,能简算得要简算.5.46÷3.9+4.5×2.3 4.23×9.9+0.4232.58﹣(3.5﹣2.4)78÷0.25÷0.4.
不用笔算,请你指出下面哪道题得数最大,并说明理由.241×249 242×248 243×247244×246 245×245.
用简便方法计算下列各题.(1)825÷25(2)47700÷900.
计算:34×3535﹣35×3434.
用简便方法计算.(1)(250+165)÷5(2)(702﹣213﹣414)÷3.
怎样简便就怎样算① ②③397÷7+47.5÷0.7+105.6÷1.4 ④﹣+﹣+…﹣.
连线
计算:①3×(x+9)=27②16×8﹣7x=23③7.5﹣7.5×0.5﹣2.6×0.8④13.7×6.5+5.9×13.7﹣12.4×3.7⑤50×[(0.2+4.8﹣4.8+0.2)÷2]⑥11.25+21.25+31.25+41.25+51.25+61.25+71.25+81.25.
(1)+÷3+ (2)÷﹣× (3)÷(﹣)(4)÷(﹣×) (5)×+× (6)(+)×40.
试题篮