用递等式计算(能简算的要简算)6.2×9.9 3.5×0.7+5.5×0.7+0.7 0.125×3.2×0.250.8×(12.5﹣1.25) 44.1÷3.5﹣7.5 18.36÷3.6×1.287.84÷1.6÷6.1.
计算下面各题,能简便的要用简便方法计算.÷÷ ×6+ ×÷ (﹣)÷﹣× (0.25+×)÷ ÷7+× (﹣)÷+.
能简算的简算 (1)÷4× (2)÷÷ (3)÷+(4)15÷÷ (5)(﹣)÷ (6)×+.
计算下面各题,能简算得要简算×÷ [1﹣(+)]÷ ×33+ 24×.
简便计算.376+28+172+124 164﹣83﹣17 25×73×443000÷8÷125 96×27+27×4 125×56.
用递等式计算(能简便的要简便计算)2.98×103﹣2.98×3; ﹣+; 2﹣﹣; +﹣;15.12÷4×2.5; ﹣(+ ); 22.78﹣22.78÷3.4; +++.