2026-2026新教材北师大版五年级上册数学计算题

一、小数乘法小数乘法是五年级上册数学计算的基础模块，其核心是将其转化为我们熟悉的整数乘法进行运算，再根据因数的小数位数确定积的小数点位置。（一）小数乘整数计算方法与整数乘法基本相同，先按整数乘法算出积，再看因数中一共有几位小数，就从积的右边起数出几位，点上小数点。若积的末尾有0，在点完小数点后可将末尾的0去掉。例题：1.2.5×4=*先算25×4=100*因数2.5有一位小数，从积的右边起数出一位点上小数点，得10.0，即10。2.0.12×3=*先算12×3=36*因数0.12有两位小数，从积的右边起数出两位点上小数点，得0.36。要点提示：计算结果的小数部分末尾有0时，通常要把0去掉，以最简形式呈现。（二）小数乘小数同样先按照整数乘法的法则算出积，再看两个因数一共有几位小数，就从积的右边起数出几位，点上小数点。如果积的小数位数不够，要在前面用0补足，再点小数点。例题：的2.3.2×0.8=？3.0.05×0.05=？4.1.25×0.5=？5.1000×0.001=？6.5.6×0.1=？7.1000×0.001=？8.0.5×0.5=？9.1000×0.001=？10.0.5×0.5=？11.1000×0.001=？12.0.5×0.5=？13.0.5×0.5=？14.0.5×0.5=？15.0.5×0.5=？16.0.5×0.5=？17.0.5×0.5=？18.0.5×0.5=？19.0.5×0.5=？20.0.5×0.5=？21.0.5×0.5=？22.0.5×0.5=？23.0.5×0.5=？24.0.5×0.5=？25.0.5×0.5=？26.0.5×0.5=？27.0.5×0.5=？28.0.5×0.5=？29.0.5×0.5=？30.0.5×0.5=？31.0.5×0.5=？32.0.5×0.5=？33.0.5×0.5=？34.0.5×0.5=？35.0.5×0.5=？36.0.5×0.5=？37.0.5×0.5=？38.0.5×0.5=？39.0.5×0.5=？40.0.5×0.5=？41.0.5×0.5=？42.0.5×0.5=？43.0.5×0.5=？44.0.5×0.5=？45.0.5×0.5=？46.0.5×0.5=？47.0.5×0.5=？48.0.5×0.5=？49.0.5×0.5=？50.0.5×0.5=？51.0.5×0.5=？52.0.5×0.5=？53.0.5×0.7=？54.0.5×0.5=？55.0.5×0.5=？56.0.5×0.5=？57.0.5×0.5=？58.0.5×0.5=？59.0.5×0.5=？60.0.5×0.5=？61.0.5×0.5=？62.0.5×0.5=？63.0.5×0.5=？64.0.5×0.5=？65.0.5×0.5=？66.0.5×0.5=？67.0.5×0.5=？68.0.5×0.5=？69.0.5×0.5=？70.0.5×0.5=？71.0.5×0.5=？72.0.5×0.5=？73.0.5×0.5=？74.0.5×0.5=？75.0.5×0.5=？76.0.5×0.5=？77.0.5×0.5=？78.0.5×0.5=？79.0.5×0.5=？80.0.5×0.5=？81.0.5×0.5=？82.0.5×0.5=？83.0.5×0.5=？84.0.5×0.5=？85.0.5×0.5=？86.0.5×0.5=？87.0.5×0.5=？88.0.5×0.5=？89.0.5×0.5=？90.0.5×0.5=？91.0.5×0.5=？92.0.5×0.5=？93.0.5×0.5=？94.0.5×0.5=？95.0.5×0.5=？96.0.5×0.5=？97.0.5×0.5=？98.0.5×0.5=？99.0.5×0.5=？100.0.5×1.5=？101.0.5×1.5=？102.0.5×1.5=？103.0.5×1.5=？104.0.5×1.5=？105.0.5×1.5=？106.0.5×1.5=？107.0.5×1.5=？108.0.5×1.5=？109.0.5×1.5=？110.0.5×1.5=？111.0.5×1.5=？112.0.5×1.5=？113.0.5×1.5=？114.0.5×1.5=？115.0.5×1.5=？116.0.5×1.5=？117.0.5×1.5=？118.0.5×1.5=？119.0.5×1.5=？120.0.5×1.5=？121.0.5×1.5=？122.0.5×1.5=？123.0.5×1.5=？124.0.5×1.5=？125.0.5×1.5=？126.0.5×1.5=？127.0.5×1.5=？128.0.5×1.5=？129.0.5×1.5=？130.0.5×1.5=？131.0.5×1.5=？132.0.5×1.5=？133.0.5×1.5=？134.0.5×1.5=？135.0.5×1.5=？136.0.5×1.5=？137.0.5×1.5=？138.0.5×1.5=？139.0.5×1.5=？14.0.5×1.5=？14.0.5×1.5=？14.0.5×1.5=？14.0.5×1.5=？14.0.5×1.5=？14.0.5×1.5=？15.0.5×1.5=？16.0.5×1.5=？17.0.5×1.5=？18.0.5×1.5=？19.0.5×1.5=？20.0.5×1.5=？21.0.5×1.5=？22.0.5×1.5=？23.0.5×1.5=？24.0.5×1.5=？25.0.5×1.5=？26.0.5×1.5=？27.0.5×1.5=？28.0.5×1.5=？29.0.5×1.5=？30.0.5×1.5=？31.0.5×1.5=？32.0.5×1.5=？33.0.5×1.5=？34.0.5×1.5=？35.0.5×1.5=？36.0.5×1.5=？37.0.5×1.5=？38.0.5×1.5=？39.0.5×1.5=？40.0.5×1.5=？41.0.5×1.5=？42.0.5×1.5=？43.0.5×1.5=？44.0.5×1.5=？45.0.5×1.5=？46.0.5×1.5=？47.0.5×1.5=？48.0.5×1.5=？49.0.5×10=？50.0.5×100=？51.0.5×1000=？52.0.5×1000=？53.0.5×1000=？54.0.5×1000=？55.0.5×1000=？56.0.5×1000=？57.0.5×1000=？58.0.5×1000=？59.0.5×1000=？60.0.5×1000=？61.0.5×1000=？62.0.5×1000=？63.0.