图书馆有科幻书120本,故事书比科幻书的4倍还多35本.图书馆里有多少本故事书?
脱式计算:(能简算的要简算) 12.8+1.9+15.94; 7.69+(4.76﹣1.96); 4.68+2.72+7.32; 25.06﹣2.65﹣8.35.
下面各题怎样算简便就怎样算 88.51﹣9.06﹣0.94132+16.4+268+23.63.028﹣20.44+66.972 55.27+8.236﹣5.2764.6﹣3.46+5.4﹣6.5464.3﹣18.75+15.7﹣11.25.
计算.(能简便的用简便法计算) 4.25÷0.125÷8 2.5×(6.2﹣2.6)×0.4 76.2÷0.16﹣0.16 0.45与2.4的积除1.62,商是多少?
1.25×320.56+3.48+0.44+6.522.8×(2.25+28.5÷1.5) 5.8×7.6+7.6×4.2145.3﹣58.6﹣41.4[(5.1﹣3.6)÷0.8﹣1]×0.09.
我会巧算. 1.2×0.4+1.3×0.4(1.25+0.36)×0.2 7.2×0.3+28×0.03 0.25×0.56×0.4 8×(2.5+0.125)0.25×0.56×0.432.8+5.6+7.275.2﹣66.9﹣5.2.