四年级数学下册小数加减法专项练习题31.docx
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四年级数学下册小数加减法专项练习题31.docx
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四年级数学下册小数加减法专项练习题31
一、口算。
7.1+0.3=3.8+5.7=93.8+6=0.97-0.34=
7.9+0.6=9+1.2=8.5-5.7=0.87-0.31=
8.3+0.3=2.7+1.3=89.5+2=0.91-0.08=
1.7-0.5=6.7+2=8-0.2=0.77-0.19=
3.7-0.6=7+2.4=10.7-7=0.91-0.34=
二、笔算。
3.87-0.83=71.76+3.46=8.26+4.76=91.2-23.7=
7.08+3.49=51.65-5.54=4.45-0.45=24.29-7.84=
9.93-0.97=80.89+5.73=7.06+6.01=56.9-29.7=
7.62+6.41=93.63-8.63=2.19-0.45=90.7-3.33=
一、口算。
5.5+0.8=9.8+1.4=79.1+3=0.5-0.14=
6.9-0.4=5+1.1=8.7+5.9=0.63+0.3=
2-0.1=4.6+0.8=57.3+8=0.87+0.11=
6.1+0.5=9.1+3.3=7.3-1.6=0.72-0.34=
6.1-0.8=4.7+5.6=36.4-7=0.88-0.18=
二、笔算。
6.11+0.63=93.83+7.17=7.96+3.2=57+47.8=
8.59-3.73=36.3-5.43=4.34-0.61=84.08+1.33=
9.84-0.97=82.23-7.34=7.1-5.19=50.8+3.2=
9.6-2.21=40.13-3.04=5.57-0.84=72.16+6.1=
一、口算。
6.4+0.2=9.1+3.6=86.7+3=0.73+0.32=
5.1-0.2=9.7-0.8=7.6+2.6=0.95+0.36=
2.4+0.7=5.7+2.3=62.7-7=0.72+0.36=
1.9+0.1=7.3-4.2=8.5-0.4=0.83+0.14=
4-0.3=2.4+4.1=14.3+7=0.75-0.07=
二、笔算。
3.42-0.39=70.83+4.13=7.81-3.49=71.8+36.8=
8.74-3.85=94.93+2.54=8.92-0.86=78.45+2.08=
7.49+0.3=35.48-9.57=7.55-6.89=84.8-38.4=
8.5-3.05=22.67+3.06=6.01+0.47=27.84+6.56=
一、口算。
2.7-0.7=4.1+5.5=99.7-2=0.76-0.27=
8.7+0.2=6+4.2=6.8+5=0.67-0.42=
2.4-0.5=3.5+1.2=95.8+5=0.93+0.07=
6.5+0.7=9.8+1.7=9.3-1.3=0.59+0.35=
5.8-0.9=2.9+1.1=75.6+9=0.95-0.26=
二、笔算。
5.86+0.47=66.61+9.68=7.93-2.47=96.9+18.7=
7.12+6.78=70.75+9.67=1.89+0.44=22.12+7.96=
9.68+0.11=59.86-2.54=8.31-1.55=73.2-19=
7.19-4.33=44.29-1.21=2.88+0.99=68.94+1.11=
一、口算。
6.1-0.7=4.3+9.8=10.2+1=0.94-0.4=
5.4+0.7=9-1.2=7.5-5.1=0.79-0.38=
6.6+0.2=3.3+7.6=46.8-1=0.72+0.33=
5.7+0.6=7.4+3.9=6+3.5=0.8-0.31=
5.4+0.1=3.3+8.7=19.2+7=0.69-0.01=
二、笔算。
8.78-0.98=67.42+7.27=9.37-1.06=93.2+37.1=
8.85+4.9=43.4+2.82=3.17+0.92=79.54+1.94=
1.63+0.72=10.05+5.03=8.95+3.07=53.9+49.2=
9.36+1.06=10.09+7.25=8.89+0.16=96.32+3.86=
一、口算。
8.4-0.5=7.5+2.7=16.9+1=0.72-0.26=
7.4-0.4=7.3-3=6.5-5.2=0.54+0.33=
6.3-0.6=1.4+4.7=84.5+1=0.71-0.21=
5.5+0.5=5.5+4=7.6+4.7=0.99-0.13=
6.6-0.8=4.4+8.9=30.2+7=0.88+0.26=
二、笔算。
7.92-0.74=13.51-8.54=8.91+3.8=87-26.1=
9.68-2.2=21.64-4.02=9.42+0.62=56.89+1.08=
2.2+0.3=87.57-4.41=8.51+5.31=50.2-35.2=
9.93+3.47=64.34+3.43=3.86+0.43=79.6-7.61=
一、口算。
3-0.9=9.5+0.5=12.1+3=0.93-0.41=
2.2+0.4=9.6+0.5=7.3+2.7=0.76+0.23=
8.1-0.3=9.9+7.8=63.3-8=0.97+0.22=
1.7-0.6=6.3-1.5=6.8-2.4=0.67+0.32=
4.1+0.3=5.4+2.5=90.8+2=0.56+0.29=
二、笔算。
2.61-0.63=55.99-1.72=8.76-2.27=67.8-30.4=
7.96+1.02=87.92+6.18=1.62+0.15=97.2+8.61=
1.09-0.13=64.58+7.18=9.47-4.5=77.9+26.7=
8.36-2.89=54.42+2.96=3.23-0.71=39.14-7.14=
一、口算。
1.2-0.6=2.6+7.3=38.9+7=0.63+0.4=
1.8+0.7=9.3+0.4=6.5-3.3=0.94+0.49=
5.6-0.5=3.4+4=18.2-5=0.97+0.43=
9-0.8=7.3-2.4=7.2-2.1=0.96+0.1=
5.7+0.8=3.7+7=84.9-7=0.8+0.29=
二、笔算。
5.15-0.92=21.62+2.77=7.91+5.19=76.6-23.3=
7.3-6.16=45.63-5.58=3.15+0.42=84.53+1.99=
5.68+0.57=69.1-8.65=9.88-5.08=89.6+28.9=
8.73+5.43=22.04+7.37=4.98-0.55=64.62-8.02=
一、口算。
3.7+0.1=0.7+6.7=28.6+6=0.97+0.43=
7.4+0.4=6.1+0.5=8+1.8=0.54-0.09=
8.7-0.1=4.6+2.2=42.3+2=0.96-0.4=
6.6-0.8=7.9-3.8=9.4+2.5=0.56+0.05=
2.7+0.2=6.7+6.8=17.6+1=0.98-0.11=
二、笔算。
8.86-0.34=24.04+1.66=7.48+5.35=97.6+4.6=
9.91-6.74=60.65+3.4=3.56-0.76=42.79+3.04=
8.44+0.08=10.08+2.81=7.19+5.14=89+30.1=
9.33+2.34=56.27+1.4=5.48-0.2=97.57+5.8=
一、口算。
7.1-0.8=8+3.7=30.7+5=0.91+0.14=
1.6+0.9=8.1+1.9=7.6-4.9=0.57-0.07=
3.3-0.2=5.6+6.3=42.9-3=0.59-0.28=
6.8-0.1=6.1-4.2=9-5.2=0.99+0.37=
1+0.7=7+5.1=88.9-8=0.53-0.08=
二、笔算。
8.91+0.6=21.76+1.47=7.75-1.08=53+12.2=
9.8+4.58=60.77+7.01=9.81-0.32=20.06+2.71=
1.68+0.34=96.89-9.65=9.63+2.53=98.5+1.9=
7.08+4.05=51.17+1.78=1.34-0.04=68.39+4.8=
一、口算。
5.7+0.7=5.2+2.1=70.4-3=0.61-0.01=
7.8-0.7=5.1-4.2=8.2-5.1=0.85+0.17=
4.7+0.2=9.3+6.2=87.5+9=0.77+0.06=
4.1+0.5=5.1-2.9=7.5-5.5=0.99+0.18=
3+0.3=2.1+1.1=85.8-3=0.82+0.39=
二、笔算。
9.65+0.98=34.87-4.28=7.27-2.07=86.8+41.7=
8+6.3=40.08-9.05=9.38-0.85=76.69+3.01=
8.49+0.88=43.37-8.76=8.49+3.96=81.1-12.3=
7.86-2.56=28.08-1.3=3.22+0.73=42.26+1.77=
一、口算。
4.9+0.2=8.4+6.6=88.9-6=0.72+0.44=
5.4-0.6=9.3-0.3=9.9-2.4=0.65-0.14=
7.2-0.1=3.9+9.9=58.9-4=0.65+0.21=
4.9+0.1=9.2-2.9=8.1+2.9=0.84+0.08=
6-0.9=2.2+7.2=61.1-6=0.51+0.34=
二、笔算。
1.49+0.08=49.78+6.29=8.27-6.08=98.9-24.8=
9.63+2.25=76.61-1.8=2.88+0.82=75.14+5.23=
5.31+0.83=34.73+6.94=7.26+5.33=59.3-14.2=
8.76+1.65=79.67+8.64=5.91+0.27=17.59+4.7=
一、口算。
3.2-0.4=7.1+8.1=44.2-6=0.99-0.06=
6.2+0.8=8.6-3.9=6+4.6=0.51+0.38=
7.8-0.6=6.9+6=69.7-1=0.66+0.4=
3.9+0.2=9.9-4.5=9.5-2.6=0.71-0.21=
1.6+0.9=6.7+9.9=41.7+8=0.91+0.35=
二、笔算。
5.55-0.3=90.33+2.68=7.07+3.93=60.2+34.8=
8.85-3.38=47.31-3.09=2.66+0.94=35.43+4.09=
1.69+0.75=38.66-4.16=8.26-1.94=83.5+44.8=
7.82-2.74=46.71+6.07=8.32-0.21=36.26-5.38=
一、口算。
2.4+0.5=4.1+4.6=32.6-9=0.54-0.09=
4.9-0.1=5.4-2.6=6.3+0.2=0.89-0.25=
6.3-0.6=5.3+7.2=37.8-7=0.68-0.31=
3.4+0.5=5.6-2.5=8.8+1.5=0.88+0.32=
7.7+0.4=5.4+2.4=37.6-1=0.64-0.29=
二、笔算。
9.23+0.57=81.16+2.23=7.87-1.62=58.1+37.9=
7.18+6.44=41.83+8.15=6.65+0.09=98.14+2.21=
9.61+0.08=96.47+7.68=7.71+3.86=85.4+37.1=
7.89+5.55=53.1-6.06=4.72+0.4=72.33+1.28=
一、口算。
8.5+0.3=0.1+4.3=13.3+3=0.95-0.18=
5.4+0.1=9.3-0.2=8.4+5.2=0.74+0.31=
7.8+0.7=1.1+2.6=60.7+8=0.78-0.01=
1.6-0.8=6.2-3.9=9.2+0.8=0.92-0.07=
8.3+0.8=3.7+2.8=45.8+8=0.7+0.16=
二、笔算。
8.06+0.44=44.46+5.4=9.41-6.38=50+10.4=
8.4+5.49=86.59+3.26=2.83-0.96=54.61-5.52=
7.95-0.22=54.43+1.82=8.75-1.7=58.6-25.1=
8.17+6.76=56.84+4.51=2.23+0.54=51.66-7=
一、口算。
1.1+0.5=1.3+7.7=46.1-2=0.84-0.34=
8.9-0.6=6.3+3.3=8.3+3.5=0.64+0.06=
2.2+0.8=7.6+6.8=35.3-2=0.74-0.23=
3.5+0.9=7.3+1.1=8.6-5.4=0.93+0.01=
3.3-0.7=5.5+0.9=18.3+8=0.66-0.16=
二、笔算。
6.63-0.17=38.08+4.86=9.62-4.9=58.2+6.3=
8.78-3.61=39.92-9.95=1.56+0.37=28.59+7.48=
7.84+0.67=62.52+2.15=8.11-1.79=71.4+9.4=
8.97-4.5=87.58+9.3=8.69-0.15=73.17-9.03=
一、口算。
3.7-0.4=3.9+6.4=55.4+9=0.51-0.32=
5.1-0.5=8.6-1.2=9.8-0.3=0.9+0.07=
8.2+0.4=3+5=98.2+2=0.83+0.19=
2.1+0.8=9.6+1.2=6.8+5.7=0.51-0.22=
1.2-0.9=4.8+7.8=33.8+8=0.5+0.17=
二、笔算。
6.86-0.96=30.89-3.58=8.3+6.44=83.6-28.2=
9.68+3.27=94.81+7.53=4.23-0.47=61.97+4.39=
9.17+0.85=26.26+1.66=9.93-3.8=81.8-44.9=
9.03+2.62=31.12-3.52=3.64-0.65=52.21+3.13=
一、口算。
4.9-0.3=8.4+1.7=99.1+5=0.59-0.36=
1.9+0.1=9.7-2=8.5-3.8=0.97+0.44=
6.8+0.5=6+1.2=56.3+6=0.65+0.45=
6.3+0.2=6.7-1.5=7.2+2.9=0.62-0.39=
4.5+0.8=4.2+5.9=98.4-2=0.63-0.37=
二、笔算。
2.13-0.24=51.17-4.94=9.64-2.27=97.6+24.5=
9.76+3.94=28.7+5.87=3.76+0.44=32.5-4.12=
1.28-0.87=51.94-8.27=7.82-4.82=96.3+20=
9.98+5.63=24.45+5.43=7-0.2=74.66-9.15=
一、口算。
4.6+0.4=4.8+1.2=49.9+5=0.73+0.31=
3.6-0.4=6.2-1.1=9.3-0.3=0.63+0.46=
7.5+0.3=7.9+7.5=79.2-6=0.81+0.07=
8-0.6=5.4-1.5=6.8+1.9=0.68+0.46=
3.9-0.3=3.7+9.3=29.2-3=0.98-0.16=
二、笔算。
8.92-0.59=53.34-5.41=8.46+3.54=84.1+32.1=
8.44-6.09=24.12-3.68=3.11-0.03=32.34+1.95=
3.4+0.93=87.55-4.18=9.5+6.87=52.2-28.4=
8.29+1.46=92.61+2.56=5.07-0.09=32.12+4.48=
一、口算。
8.6-0.8=6.9+5.5=60.8-9=0.89+0.01=
1-0.1=6.4-4.6=6+2.4=0.87-0.03=
2.9+0.6=4.6+4.8=15.8-8=0.59+0.33=
1.3-0.1=6.4+1.1=8.7+0.1=0.62+0.06=
2.5+0.7=1.1+1.1=18.4-2=0.85+0.14=
二、笔算。
4.44+0.96=24.81+8.75=8.52-2.93=51.8-40.1=
7.67-4.46=72.15-4.77=2.73+0.56=23.9+1.32=
6.71+0.78=60.57+8.38=9.58-6.89=94.6+20.5=
9.82+2.06=50.88+9.37=7.86-0.17
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