有一盒乒乓球,每次8个8个地数,10个10个地数,12个12个地数,最后总是剩下3个.这盒乒乓球至少有多少个?
能简算的要用简便方法计算 24.1×1.5+7.59×15(3.7+17×0.4)÷3.575.36÷12﹣4.32×0.5 8.8×0.1257.6×5.3+3.7×7.66.6÷(0.68+0.42)
脱式计算.(能简算的要简算) (1)1.25×8.37×0.8(2)(9﹣2.35)×0.64(3)0.25×32×12.5 (4)0.15×1999+0.15(5)0.37×1.4﹣0.4×0.37(6)8.7×9.9.
递等式计算(能简算的要简算). (1)191.3﹣47.2+96.9 (2)9.63+13.78﹣3.63 (3)50.03﹣6.5﹣0.5 (4)25×125×16 (5)2506﹣506×3+27 (6)99×63+63.
计算下列各题,能简算的要简算. 2.56÷0.04÷0.51.92÷0.12﹣2.37.3﹣1.5÷0.247.52×0.65÷0.752.
用递等式计算,能简算的就简算. (1)(0.1﹣0.09)×100 (2)3.12÷0.025×1.5 (3)1.2×2.5×4×0.2×5 (4)0.25×0.125×32 (5)1.25+1.25+1.25×8 (6)70.6﹣35×1.7+13.5÷5.