小学数学各年级口算速算竞赛试题

1200÷3=18×30=?3×500=?18.5-7.5=?25×80=?125×8=332-246=?947-236=?285+691=?166-120=?792+192=785+937=?460+991=?144+150=?544-492=?727+517=天元小学数学四年级口算、速算竞赛试题挑战计算极限,争当计算明星!加油!?时间:45分钟2.5×(3.8×0.4)=7.69×101=8.36-2.48-3.52=46×0.33+54×0.33=0.125×72=0.25×39+0.25=1.25×2.6×8=8.8×0.125=3.67+5.8+0.33=52.89-(13.54+4.89)=36-15.6-0.4=4.28+0.53-2.28=X+13=50X-2.5=6.30.15+Y=4+0.350.53-X=0.23.74159+14.2-2.74159=3.9742×48×0=(0.5+0.8)×4=1.25×32×0.4=5.3×2.4=6.04-5.64=101×99=10.46-0.35=8.52+4.65=7.55-4.67=5.76+3.37=3.67+7.56=21.35-19.0557-3.45=8.32-(1.32+0.09)=0.81-0.45-0.36=6.06-(3.14+0.4)=2.6×3+1.4×3=8.7×1.01=4.5+5.5×0.42=1.25×4×2.5×0.8=0.34×99+0.34=3.7×4.6+6.3×4.6=7.25×0.35-7.25×0.25=48×0.25=0.25×3.2×1.25=1.25×3.7×8=0.65×1.02=38.6×47+38.6×53=3.86×47+38.6×5.3=13.8×2.9-2.8=9.76×0.72-0.76×0.72+0.72=12.5×99=2.5×47×4=