五年级下册数学计算题大全300道

五年级下册数学计算题大全300道同学们，数学计算是数学学习的基石，也是解决实际问题的重要工具。扎实的计算能力不仅能帮助我们在考试中取得好成绩，更能培养我们严谨的思维习惯和细致的学习态度。这份五年级下册数学计算题大全，涵盖了本学期所学的主要计算知识点，希望同学们能认真对待每一道题，通过反复练习，熟练掌握计算方法，提高计算速度和准确率。加油，你们都是最棒的！一、小数乘法小数乘法的计算方法与整数乘法类似，先按照整数乘法算出积，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。如果积的小数位数不够，要用0补足。1.0.7×2=2.0.8×5=3.1.2×3=4.0.25×4=5.0.15×2=6.0.3×0.2=7.0.4×0.5=8.0.12×0.3=9.1.1×0.8=10.0.05×0.6=11.2.5×0.4=12.0.6×1.2=13.0.8×0.11=14.3.2×0.3=15.0.09×0.5=16.1.5×0.6=17.0.75×0.2=18.0.42×0.2=19.2.2×0.4=20.0.18×0.3=21.0.04×0.7=22.1.05×0.2=23.0.36×0.1=24.5.5×0.2=25.0.8×0.8=26.0.125×8=27.0.35×0.2=28.0.06×0.9=29.2.1×0.3=30.0.44×0.5=31.0.08×0.4=32.1.3×0.03=33.0.5×0.16=34.0.72×0.1=35.0.22×0.4=36.0.03×0.3=37.1.6×0.05=38.0.45×0.2=39.0.07×0.6=40.3×0.15=41.0.55×0.2=42.0.09×0.02=43.2.4×0.03=44.0.8×0.05=45.0.11×0.7=46.0.3×0.33=47.0.65×0.1=48.0.04×0.08=49.1.8×0.02=50.0.25×0.04=51.0.4×0.21=52.0.01×0.8=53.0.7×0.12=54.0.5×0.5=55.0.13×0.3=56.0.08×0.03=57.2.2×0.03=58.0.6×0.07=59.0.15×0.04=60.0.9×0.01=二、小数除法小数除法，先看除数是几位小数，就把被除数和除数的小数点同时向右移动相同的位数，使除数变成整数，然后按照整数除法的方法进行计算。商的小数点要和被除数移动后的小数点对齐。61.4.2÷2=62.5.6÷7=63.0.81÷9=64.2.4÷0.3=65.3.6÷0.4=66.1.25÷0.5=67.0.72÷0.8=68.0.63÷0.9=69.1÷0.25=70.0.48÷0.06=71.5.4÷0.6=72.0.36÷0.04=73.7.2÷0.08=74.0.56÷0.7=75.0.49÷0.07=76.3.5÷0.5=77.0.8÷0.02=78.1.8÷0.03=79.0.96÷0.12=80.2.1÷0.3=81.0.35÷0.05=82.4.8÷0.16=83.0.64÷0.8=84.6.3÷0.09=85.1.2÷0.04=86.0.88÷0.11=87.5÷0.2=88.0.75÷0.15=89.3.2÷0.08=90.0.9÷0.03=91.4.5÷0.05=92.0.54÷0.06=93.8÷0.5=94.0.45÷0.9=95.2.5÷0.05=96.0.63÷0.07=97.1.5÷0.03=98.0.42÷0.06=99.6÷0.12=100.0.99÷0.11=101.3.6÷0.12=102.0.85÷0.5=103.5.2÷0.04=104.0.72÷0.09=105.1.4÷0.07=106.0.6÷0.15=107.8.1÷0.09=108.0.55÷0.11=109.4÷0.08=110.0.84÷0.12=111.2.7÷0.03=112.0.95÷0.05=113.6.4÷0.16=114.0.48÷0.08=115.3÷0.05=116.0.7÷0.35=117.9.6÷0.12=118.0.66÷0.06=119.5.5÷0.11=120.0.81÷0.03=三、简易方程解简易方程，主要依据等式的性质：等式两边同时加上或减去同一个数，等式仍然成立；等式两边同时乘或除以同一个不为0的数，等式仍然成立。121.x+3.5=7.8122.x-2.1=4.3123.5x=20124.x÷4=0.5125.3x+6=15126.4x-12=20127.0.5x+1=3128.x-0.2x=1.6129.3(x+2)=18130.12-x=5131.2x+3x=25132.6x-2x=12133.x÷0.6=1.2134.2.5x=10135.x+0.8x=3.6136.7x-4=31137.3x-1.5=4.5138.x÷5+2=4139.0.3x-0.2=0.4140.4+5x=19141.10x-6=34142.x-0.36x=1.28143.2(x-3)=10144.5x+7=22145.8x÷2=16146.3x-2×6=15147.0.4x+0.6x=5148.x-1.5=2.5149.6x+3=21150.15-2x=7151.x÷3-2=1152.2.4x-1.6x=0.8153.7(x-1)=21154.3x+4×2=23155.1.2x=4.8156.x÷1.1=3157.5x-3x=1.8158.4x+9=25159.6x÷4=1.2160.10-3x=1四、分数的加减法同分母分数相加减，分母不变，分子相加减；异分母分数相加减，先通分，再按照同分母分数加减法的方法进行计算。结果能约分的要约成最简分数。161.1/2+1/3=162.3/4-1/2=163.2/5+1/4=164.5/6-1/3=165.1/3+1/6=166.7/8-3/4=167.2/3+1/5=168.4/5-2/3=169.1/4+3/8=170.5/7-2/7=171.3/10+1/5=172.1-5/9=173.2/7+3/7=174.5/8-1/4=175.3/5+3/10=176.7/9-2/3=177.1/6+1/4=178.3/8+1/2=179.4/7-1/3=180.5/12+1/6=181.1/2-1/5=182.3/5+1/3=183.5/6-2/9=184.2/3-1/4=185.1/8+5/8=186.7/10-3/5=187.2/5+3/10=188.3/4+1/6=189.5/9+1/3=190.11/12-3/4=191.3/7+4/7=192.4/9-1/6=193.5/8+3/8=194.1/3-1/7=195.2/5+2/3=196.7/8-1/6=197.1/4+1/5=198.5/7-3/14=199.3/10+7/10=200.2/3+2/9=201.5/6-7/12=202.1/2+3/5=203.4/5-1/6=204.3/8-1/8=205.1/5+1/8=206.3/4-5/12=207.5/9+4/9=208.7/12+1/4=209.2/7+5/14=210.1-3/7=五、分数与小数的互化分数化小数，用分子除以分母；小数化分数，看小数位数，一位小数表示十分之几，两位小数表示百分之几，三位小数表示千分之几……然后化简。211.0.5=()/()212.1/2=()213.0.25=()/()214.1/4=()215.0.75=()/()216.3/4=()217.0.2=()/()218.1/5=()219.0.4=()/()220.2/5=()221.0.6=()/()222.3/5=()223.0.8=()/()224.4/5=()225.0.125=()/()226.1/8=()227.0.375=()/()228.3/8=()229.0.625=()/()230.5/8=()231.0.875=()/()232.7/8=(