四年级数学下册小数加减法专项练习题39.docx
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四年级数学下册小数加减法专项练习题39
一、口算。
3.1+0.5=7.6+4.7=91.4-8=0.98-0.29=
6.6-0.7=5.2-4.6=9.8-5.5=0.83+0.35=
5.4+0.4=4.5+4.4=39.1-2=0.68+0.18=
3.6-0.9=5.2-4.8=8.4-2.6=0.95+0.07=
5.4-0.2=3.8+3.2=25.4+1=0.68-0.4=
二、笔算。
7.03+0.11=41.07-2.83=7.73+5.93=77.8-32.3=
7.66+2.76=67.04-9.98=3.49-0.92=25.77-3.09=
1.3+0.76=48.88+2.93=8.16-4.05=86.3-12.1=
8.9+4.05=69.16-1.85=5.34+0.92=75.71+9.62=
一、口算。
5.1-0.2=8.3+5.6=19.5+9=0.68-0.46=
8-0.8=7.7+2.5=6.3-2.2=0.68+0.38=
8.9-0.4=0.8+4.6=22.2-5=0.99-0.05=
1.4+0.1=7.9-3=7.1-5.4=0.86-0.45=
1.3-0.1=1.1+2.4=39.2+4=0.83-0.17=
二、笔算。
4.78+0.07=42.18-4.89=9.59-5.31=83-31.1=
8.43-2.8=91.98+2.96=2.25+0.83=44.69-1.22=
7.77-0.27=43.52-2.6=7.78+3.27=90-4.8=
9.14+5.47=84.75-3.67=8.24+0.21=27.93-5.1=
一、口算。
3.3+0.3=0.6+7.4=61.1-7=0.71-0.31=
2.8+0.2=9.7-1.9=8.5+2.2=0.54-0.19=
1-0.6=5.1+5.7=45.9+9=0.57-0.48=
3.4-0.1=9.3+3.6=8.8+3=0.84+0.14=
1.8-0.4=3.6+0.4=63.3-1=0.62-0.08=
二、笔算。
9.99-0.67=31.27-5.53=9.14-6.86=60.7+34.3=
7.51-2.38=26.35-4.17=4.58-0.53=14.54+8.06=
2.93+0.74=41.15+6.67=7.82-6.77=67-21.1=
9.99-4.04=22.15-5.07=7.41+0.66=74.77-5.26=
一、口算。
3-0.8=9.8+8.2=86.7-4=0.81-0.23=
7.3+0.4=6.5+4.6=8.1-2=0.61+0.36=
2.5+0.7=2.4+9.4=31.5-4=0.57+0.24=
6.5+0.2=6.1+1.9=9.9-4.7=0.93+0.33=
8.8+0.2=1.1+3.8=49.1+3=0.79-0.26=
二、笔算。
7.66-0.07=56.98+5.75=7.36+6.43=75.3-1.7=
7.84+1.5=94.64-5.33=9.88+0.49=72.26-9.16=
8.14+0.35=97.81+3.22=8.28+2.62=87.3-29=
8.23+3.17=22.31+1.32=9.19-0.62=30.37+2.81=
一、口算。
4.4+0.6=2.2+8.6=55.1+4=0.97-0.04=
1.5-0.3=8-0.5=8.2-2.4=0.8-0.06=
4.3+0.9=0.5+2.4=65.3+5=0.74+0.05=
1-0.3=7.6-1=9.5-3.6=0.94+0.14=
2.4+0.2=8.8+8.8=20.1-5=0.62-0.06=
二、笔算。
6.42+0.9=40.31+7.11=9.9+2.84=50.3-49.7=
7.96+5.4=83.28+4.58=7.45+0.1=85.71+3.48=
3.16+0.05=38.24-6.29=8.07+2.95=85.9-45.4=
7.65+1.2=63.27+6.05=1.72-0.02=26.3+5.94=
一、口算。
3.7+0.3=8.1+9.9=25.7-9=0.55-0.42=
4.7+0.1=6.6+1=8.8+4=0.53-0.28=
3.5-0.4=3.9+3.1=37.9-5=0.78-0.17=
7.3-0.4=7+1.6=8.4+2=0.89+0.42=
3-0.4=0.1+9.3=99.1-3=0.92+0.49=
二、笔算。
8.56+0.63=23.37-3.45=7.41+1.13=84.7+12.5=
9.99+6.99=36.11-3.01=6.68+0.1=80.41-9.57=
3.85-0.91=21.83-3.72=8.19+2.25=89.8+3.1=
9.82-4.8=33.03-5.82=8.75-0.84=98.24-5.75=
一、口算。
3.3-0.9=3.4+9=17.2+3=0.75+0.11=
2.8-0.1=6.8-0.1=9.6-0.1=0.52-0.1=
4.6-0.9=6.5+7.8=53.2+2=0.69-0.23=
5.8+0.6=6.1+1.2=6.4+3.9=0.53+0.14=
3.3-0.2=6+0.8=49.2-5=0.79+0.35=
二、笔算。
3.41-0.6=95.87+8.66=7.35-1.44=90.4+45.2=
9.24-6.79=85.67-1.19=1.84+0.62=56.87+4.13=
8.82+0.27=10.3-9.69=8.52+1.46=79+4.4=
8.37+5.08=50.23-9.61=9.44+0.35=37.11-7.39=
一、口算。
8.9-0.3=4.1+7=20.1-4=0.69-0.41=
7-0.2=7.4-2.2=6+4.3=0.98+0.41=
3.5-0.6=6+8.5=89.6+1=0.54-0.13=
5.1-0.4=8.2+4.2=9.4-5.9=0.87-0.11=
7.1-0.9=0.7+4.3=89.8+2=0.55-0.02=
二、笔算。
7.55+0.21=40.03+7.67=9.03-2.72=68.3+48.7=
9.42-3.93=67.35-8=2.15-0.89=27.6-1.09=
2.72+0.56=33.5+6.83=9.18+1.77=62.3+3.6=
9.94+3.18=90.07-3.98=7.89+0.04=42.6+7.25=
一、口算。
4.4+0.4=9.9+6=50.4-2=0.74+0.41=
2-0.3=8.4+3.7=9.4-0.5=0.57+0.23=
1.1+0.9=4.1+3.8=46.9+2=0.97+0.16=
3.9+0.9=5+0.3=7.4-1.4=0.84-0.17=
2.8-0.9=5.6+7.4=88.1-5=0.55+0.16=
二、笔算。
1.02-0.73=40.36-8.73=9.45-1.41=53.8+37.3=
7.62+1.44=16.21-4.44=5.85+0.98=75.77+6.18=
9.02-0.66=82.65+1.81=7.16-1.75=59.1-8.4=
8.13-5.32=64.55-5.73=1.88+0.14=96.97+7.78=
一、口算。
3.6-0.2=5.8+1.8=51.6-9=0.58+0.41=
3.4-0.1=7.3+1.2=6.4+4.7=0.86+0.36=
6.3-0.8=0.1+9.2=58.3+9=0.73+0.22=
5.3+0.9=8.7-4.7=8.1+2.3=0.5+0.25=
4.9-0.8=9+4.9=18.9-5=0.7-0.03=
二、笔算。
1.07+0.13=72.42+6.54=7.57+3.96=62-44.2=
7.96-3.1=15.66-6.6=6.22+0.88=16.23-3.29=
5.89+0.12=81.45+9.84=7.64+1.09=93.4-27.9=
7.66+3.42=77.91-5.72=4.9-0.95=36.91+2.61=
一、口算。
3.9-0.8=8.2+2.1=34.3+1=0.68-0.45=
5.3+0.1=5.7+3.1=7.1+2=0.66-0.42=
6.5-0.4=9.3+1.1=88.8-4=0.77+0.34=
4.8+0.7=7.9+0.9=9.8+0.3=0.69-0.13=
2.6+0.3=0.2+4.8=46.6+2=0.57+0.48=
二、笔算。
6.86+0.69=36.43+6.58=9.89+6.13=61.3-1.5=
8.45-5.92=78.62+2.43=9.31+0.74=80.88+9.02=
8.72+0.03=51.27+7.6=8.86-1.71=88.6-27.1=
7.2-2.92=31.3-5.11=3.82-0.16=80.23+4.77=
一、口算。
4.2+0.2=2.8+7.3=11.9+3=0.98+0.44=
6.3+0.3=9.5-2.2=6.7-4.3=0.96+0.13=
7.5-0.6=8.6+6.1=94.7-9=0.89-0.25=
5.5+0.3=7.2-0.2=7.8+5.1=0.77+0.42=
3.7+0.7=7.9+6.2=11.8-5=0.78-0.11=
二、笔算。
6.26-0.33=48.42-6.92=8.17+4.82=98+23.6=
7.12-2.4=18.4-4.16=8.29+0.83=30.03+6.21=
2.21-0.97=76.87+9.2=8.71+6.07=61.6+22=
8.51+3.72=28.33-1.12=9.68+0.74=59.21-8.35=
一、口算。
3.5-0.5=2.2+9.4=26.8-4=0.51-0.38=
3.3+0.6=6.9-2.6=7.9+5.2=0.71-0.17=
1.7+0.1=3.4+8.1=89.6-3=0.79+0.14=
5.3+0.5=6.7-0.4=7.9-5.6=0.59+0.11=
5.3+0.9=3.6+1=34.1-1=0.53+0.21=
二、笔算。
3.78-0.17=52.97-3.58=7.14+3.21=63-7.3=
9.73+3.36=79.93+6.33=4.45+0.6=47.82+3.97=
3.34-0.68=59.08+8.49=9.81-4.52=69.4-6.9=
7.42-1.71=14.94+3.94=8.26+0.01=38.02+5.82=
一、口算。
4.7+0.8=2+9=63.7+3=0.88-0.1=
5.4-0.6=8.8-3.5=9.5-1.6=0.73+0.29=
1.1+0.4=4.7+2=96.4-4=0.99-0.03=
1.6-0.8=7.6-1.4=7.4-2.3=0.61+0.13=
5+0.5=8.8+2=13.8+7=0.71-0.09=
二、笔算。
6.17-0.2=48.57-9.56=7.24+2.33=57.4-5.7=
8.64+2.12=28.42-4.13=8.96+0.13=96.07+7.17=
9.52-0.98=32.55+4.67=7.8+4.04=73.6-3=
9.91+1.79=17.87-5.93=6.77-0.32=41.04-9.26=
一、口算。
7.6-0.5=0.7+4.6=50.5+1=0.83-0.16=
1.3-0.3=9.4-0.8=6-1.1=0.97-0.29=
7.7-0.8=8.4+0.1=65.9-7=0.58-0.34=
6.4+0.6=6.6+4.8=6.2-5.8=0.7+0.27=
2+0.2=9.6+4.8=71.3-9=0.89+0.45=
二、笔算。
3.55-0.41=62.1-3.86=7.31-1.78=81.8+2.8=
7.07-6.15=64.56+6.24=7.86-0.48=23.69-6.49=
6.57-0.67=54.47-9.54=8.13+6.61=50.6+27.3=
8.26-5.72=79.01-2.02=3.55+0.72=43.09-4.41=
一、口算。
4.5+0.4=9.2+2.3=60.8+5=0.73+0.43=
4.7+0.3=6.4+2.8=7.1+4.3=0.98-0.17=
2.7-0.4=8.2+0.4=72.1+3=0.99-0.42=
2.3+0.2=7-2.2=8.1+2.2=0.72-0.43=
4.7-0.1=2.7+8.5=27.7-6=0.91+0.43=
二、笔算。
7.03-0.12=25.15+1.15=9.57+4.32=51+40.1=
7.51-6.29=29.2+7.3=2.61+0.5=20.18-7.08=
1.65-0.86=71.66-3.54=7.23-1.05=73.2+29.9=
9.78+6.45=77.7-5.83=3.82+0.95=54.67-5.53=
一、口算。
1.3+0.2=2.3+4.2=49.3+5=0.98-0.18=
3.3+0.2=5.2+2.7=6.6+3=0.59+0.23=
3.7+0.1=9.4+2.7=80.6+4=0.98-0.46=
2-0.7=5.2+3.9=8.1+0.2=0.87-0.36=
3.8+0.7=7.5+9.4=25.2+7=0.63+0.4=
二、笔算。
9.84-0.75=79.39+2.17=9.86-4.27=89.7+5.8=
9.25+5.57=47.7-1.8=7.94-0.59=70.9+4.16=
1.86-0.08=58.07-9.44=8.28+6.14=91.8-37.9=
8.73+5.45=91.7+7.05=4.43-0.82=52.93-4.48=
一、口算。
7.4+0.8=3+0.8=94.9+9=0.79-0.37=
2.4+0.9=8.8-1.2=9.9-2.9=0.84-0.35=
1.3+0.6=4.2+9.8=47.1-5=0.92+0.47=
2-0.3=8.9-1.6=7.3+5.3=0.6+0.47=
8+0.2=2.8+9.1=42.1-6=0.78+0.07=
二、笔算。
4.38+0.89=71.78-3.39=8.4+1.62=95.6-4.3=
8.51-5.02=16-4.14=4.19+0.72=30.68-6.03=
7.14+0.47=61.83+2=8.78-3.96=65+12.7=
8.9+3.95=40.98+1.08=7.01+0.8=38.39-4.06=
一、口算。
3.1+0.3=0.6+1=73.7-2=0.77-0.41=
8.7+0.2=8.3+1.9=8.7-4.1=0.94-0.06=
1.9+0.6=3.5+5.6=31.3+7=0.65+0.15=
2.5+0.5=6.7+1.5=8.8-1.6=0.83+0.27=
6.7-0.9=8.1+2.4=83.6-1=0.62+0.06=
二、笔算。
8.79+0.7=79.38+4.1=9.76+6.1=70.7-35.9=
9.29+3.99=52.91+8.58=6.51+0.53=55.76+4.58=
4.04+0.8=96.09+6.81=9.63-1.62=62.6+20.8=
8.13-5.17=23.87+4.49=6.34-0.92=18.37-1.6=
一、口算。
3.4-0.8=5.4+6.3=32.7-3=0.81+0.09=
7.8-0.2=5.8-1.6=6.5-0.5=0.86+0.15=
4.4-0.4=3.3+9.2=83.5-9=0.95+0.43=
5.8+0.8=7.2-2.2=7.6-2.9=0.75-0.17=
9+0.7=2.3+9.8=51.4+3=0.55-0.13=
二、笔算。
9.53+0.21=15.58-4.92=9.49-5.47=98.8+7.4=
7.81-2.52=38.05+2.25=3.96-0.81=64.34+8.42=
5.84+0.06=15.9-9.2=8.1-3.95=73.9+26.6=
8.31-6=68.92+4.51=3.27-0.53=93.36+9.94=