四年级数学下册小数加减法专项练习题172.docx
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四年级数学下册小数加减法专项练习题172.docx
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四年级数学下册小数加减法专项练习题172
一、口算。
7.6+0.9=5.6+6.1=74.5+5=0.72+0.06=
3.6-0.2=7.1+4.1=7.1-5.6=0.75-0.05=
1.4-0.2=3.6+6.9=64.4+3=0.64-0.45=
3.5+0.4=7.4-2=9.4-4.1=0.98+0.09=
6.3-0.5=5+2.4=75.4+5=0.83+0.33=
二、笔算。
5.47+0.61=44.76-5.65=7.38+6.73=54-35.8=
9.57+2.89=96.34-2.06=4.63-0.23=35.59+8=
2.6-0.04=31.25-8.63=9.13-2.71=65.6+23=
7.46+4.49=72.38+4.15=1.9-0.57=56.52+6.3=
一、口算。
7.5+0.8=3.6+5.7=20.1-5=0.75+0.44=
8.1-0.7=8.8-1.6=9.3-1.1=0.66+0.16=
6.7+0.7=7.1+3.9=73.5-4=0.55+0.13=
2.9-0.8=7.4+4.6=7.1-4.1=0.73-0.07=
1.3+0.8=6+9.9=56.3+1=0.94+0.22=
二、笔算。
7.61-0.75=49.77+5.5=9.88+3.34=82.9-40.3=
9.27+2.86=78.14+6.98=9.05-0.09=41.49+8.2=
8.9+0.91=62.93-6.81=9.72-5.7=58.8+20.9=
9.66+6.84=75.83-6.03=5.88+0.58=49.53-6.91=
一、口算。
4.1-0.6=6.8+2.8=63.8-1=0.6-0.23=
7.5+0.6=8.8+2.3=7.5+2.2=0.88-0.31=
5.4-0.5=1.1+7.3=36.5-2=0.52-0.15=
3.3+0.2=5.3-1.7=9.8+4.6=0.96-0.48=
1.1+0.6=2.3+9.9=11.6-9=0.61-0.44=
二、笔算。
5.94-0.82=74.54+1.92=7.13-3.37=85.1-45.5=
9.09+5.28=55.09+8.62=3.28-0.78=57.41-7.62=
9.35+0.15=99.82-4.04=7.11+3.55=79+42.5=
7.24+3.62=69.92+2.78=3.28+0.54=97.84-9.95=
一、口算。
8.1+0.4=5.4+8.7=92.9+1=0.6+0.26=
6.7+0.2=7.3-2.4=7.5-0.3=0.56-0.1=
4.6-0.1=5.6+9.2=94.8+4=0.95-0.34=
4.6+0.8=6.6-4.2=6.4+2.4=0.98-0.03=
4.6-0.6=0.7+8=85.1+9=0.52+0.07=
二、笔算。
4.07+0.72=35.42-4.88=7.26-4.75=69-13.2=
8.71+6.57=66.25+1.18=2.11-0.41=86.62-3.94=
2.47+0.38=45.95+3.17=9.63-2.32=78.9-4=
8.09-4.19=95.43-8.63=4.08-0.6=76.05-4.33=
一、口算。
7.4+0.7=7.9+1.6=89.4+9=0.57-0.49=
6.4-0.8=8.8+3.8=7.2-2.4=0.75+0.19=
1.1-0.9=0.5+9.2=23.9-8=0.66-0.11=
1.7+0.5=5.8+3.7=7.3+3.4=0.52-0.26=
3.4+0.5=8.5+0.9=95.1-4=0.55+0.34=
二、笔算。
9.86+0.43=29.25+9.5=9.39-3.38=57.5-43.9=
7.86-5.98=19.94+9.26=8.95-0.68=43.39+5.89=
7.29+0.37=24.98-4.99=8.31+5.33=65.6+8.1=
7.41+1.64=44.94-7.25=7.98+0.24=42.79+8.94=
一、口算。
2.9+0.9=9.2+9.7=39.3+1=0.81-0.45=
7.7+0.7=5.3+2.5=8.5+2.6=0.87+0.25=
2.1-0.3=5.3+6.7=83.1+4=0.76-0.03=
8.7+0.1=7.7+1.5=7.4-3.2=0.76-0.03=
7.1-0.2=7.5+8.9=24.7+6=0.85+0.19=
二、笔算。
8.3-0.9=61.46+8.49=9.62-5.39=65.1+20.9=
9.98+3.49=36.75-8.48=7.83+0.59=48.13+5.58=
8.8+0.13=64.45-5.73=8.85-4.82=71.9+16.6=
7.62+6.41=51.64-7.23=7.97+0.45=46.31+2.38=
一、口算。
3+0.8=6.1+5.6=82.2+1=0.6+0.2=
5.5+0.8=5.1-2.1=6.9+3.6=0.82-0.07=
6.1+0.2=8.2+5=97.7+5=0.98+0.21=
2.1+0.4=8-0.7=7.2-3.2=0.91+0.06=
3.4-0.5=8.8+0.9=79.4+9=0.93-0.43=
二、笔算。
3.38+0.58=87.27+9.47=7.59+3.56=87.3-42=
7.14+5.42=66.73+6.24=6.1+0.6=94.06+3.75=
4.45+0.45=32.61+3.61=7.93+2.56=80.8-24.4=
8.98-6.04=99.38+9.27=4.08+0.84=57.18-7.01=
一、口算。
2-0.1=8.2+1.7=70.3-7=0.66-0.28=
8+0.3=8.1-2.2=6.9+1.7=0.52+0.01=
7.6+0.5=8.9+4.6=53.4+4=0.6+0.21=
1.1-0.2=9.3+2.9=8.7+2.4=0.52-0.25=
4.5+0.6=4.9+0.1=22.2-9=0.51+0.12=
二、笔算。
9.26-0.06=20.1+1.05=8.78-5.59=71.7+29.4=
9.48-1.01=85.41+7.29=7.65-0.85=17.53+7.38=
2.98-0.73=17.51+5.37=7.12+3.61=78.4-32.6=
9.59+4.88=44.47-5.86=2.81+0.65=83.45+9.68=
一、口算。
8.1+0.9=2.3+8.5=23.2-3=0.63-0.48=
8.1-0.7=5.8+2=9.1-0.9=0.64-0.48=
5.2-0.3=4.3+4.8=27.7+2=0.71+0.43=
3.3+0.9=9.7+0.3=9.7+4.8=0.78+0.43=
9-0.5=7.1+7.4=39.1-2=0.5+0.21=
二、笔算。
4.51-0.92=57.89+7.61=9.3+4.09=69.3-30.1=
7.96+5.93=10.9+2.28=2.37+0.39=79.1-6.58=
9+0.88=47.15+1.2=7.17-1.61=69-24.1=
7.54-5.15=71.56+4.24=5.29-0.93=79-6.13=
一、口算。
2.4-0.9=8.3+6.7=90.7+2=0.59-0.13=
2.8-0.7=5.3-0.9=9.6-4.9=0.54-0.29=
1.1-0.9=3.6+7.1=33.9-4=0.79-0.05=
7.7-0.5=9.2+1.5=8.3-3=0.88-0.15=
1.9-0.8=6.8+2.5=29.8-4=0.62+0.35=
二、笔算。
3.55-0.96=74.86-3.99=7.68-2.61=81.4-13.4=
8.34-3.27=32.57+2.88=3.69+0.63=53.06+4.6=
6.71+0.29=89.4-9.78=7.12-5.88=79.7-26.9=
9.19-4.41=21.96+7.02=9.25+0.4=52.17+3.75=
一、口算。
6.2-0.1=1.8+1.3=23.8+1=0.81-0.22=
3.2-0.9=6.1-1.8=7.2+3.5=0.54-0.46=
6.3+0.5=0.1+8.4=62.6+8=0.57-0.38=
3.1+0.3=9+0.5=7.1-2.5=0.63-0.1=
6.8+0.2=3.4+6.9=12.3+9=0.68-0.28=
二、笔算。
2.48+0.94=30.69+9.69=7.07-6.43=64.9-33.6=
8.15-3.43=27.5-6.48=9.77+0.03=25.38+2.65=
8.42-0.9=40.35-8.82=7.51+5.48=83.7-37.4=
9.01+6.19=41.64-8.37=9.47+0.32=37.43+9.73=
一、口算。
4.7+0.9=2.9+8=51.1-5=0.89-0.46=
8.3-0.3=6.6+2=6.3-4.3=0.87+0.48=
4.1+0.8=9.1+8.2=67.8-2=0.53+0.09=
2.1+0.1=6.3-3=9.6-3=0.8-0.29=
1.7-0.2=8.2+3.1=51.5+3=0.59-0.35=
二、笔算。
8.29+0.53=85-6.89=8.1-3.66=56.5-16.8=
7.78-6.04=41.39+6.51=1.31-0.4=28.67+1.31=
8.33-0.84=90.07+4.08=9.78-1.75=98.7+32.9=
9.1+1.45=76.44+9.18=3.53-0.84=68.78+8.84=
一、口算。
1.3-0.4=2.2+7.4=62.9+6=0.99-0.28=
4.2+0.1=7-0.2=6.1-4.7=0.83+0.06=
7.7-0.1=6.1+9=59.3-2=0.92-0.19=
7.9-0.6=8.9+3.3=7.1+0.9=0.68+0.48=
3.2+0.5=9.4+1=24.3-2=0.5+0.06=
二、笔算。
3.79-0.2=26.16-9.34=7.48-6.42=99.5-45.3=
7.56+1.9=13.07+6.47=7.11+0.41=14.79+8.27=
2.23-0.96=33.14+5.84=7.14-5.03=93.6-32.4=
9.27+4.55=32.92+5.46=6.68-0.08=71.92+6.05=
一、口算。
6.4-0.1=7.1+4=42.2-3=0.67-0.37=
4.9-0.3=9.3+3=6.4+5.2=0.95-0.39=
8.8+0.3=7.1+3=81.9-5=0.87+0.04=
4.7-0.4=7.1-1.9=6.5-1.7=0.87+0.06=
8.9-0.7=4.9+7.2=48.5+7=0.71+0.25=
二、笔算。
5.5+0.54=44.79-9.14=8.26+2.32=54.7-34.7=
7.65-4.63=30.9-7.85=1.63-0.43=23.58+7.68=
2.79-0.36=86.83+4.16=8.45-4.89=96.7+17.7=
8.34-2.02=23.28-4.19=6.44+0.76=20.82-6=
一、口算。
1.7+0.4=0.7+0.3=73.8+6=0.79-0.49=
7.3-0.5=9.4+0.9=7.9-3.9=0.56+0.44=
5.5+0.3=8.5+8.4=57.6-9=0.64+0.05=
6.3+0.4=7-0.9=9.1-0.2=0.98+0.37=
4.3+0.9=5.6+0.9=51.2-9=0.78-0.23=
二、笔算。
9.22+0.75=56.32-8.66=8.46-5.57=86.9-25.4=
9.46+5.12=34.9-9.66=3.66+0.57=69.57-7.25=
8.08+0.76=34.87-4.52=7.83-2.16=89.9-47.2=
7.1-6.18=37.66-2.31=6.71-0.01=28.43-8.35=
一、口算。
4.2-0.4=0.2+1.2=90.6-5=0.58+0.05=
3-0.1=5.5-0.2=9-3.4=0.95-0.14=
6.2+0.9=8.4+6.9=15.2+9=0.68-0.33=
3.5+0.2=6.2+2.2=9.2-3.7=0.9-0.31=
6.3-0.1=9.7+0.6=97.6-7=0.6-0.28=
二、笔算。
1.73+0.54=15.25-8.24=9.36+2.03=65.6+29.8=
8.01+3.42=56.95+4.13=8.45-0.55=82.2+2.35=
3.59+0.92=40.37-4.1=8.14-5.69=83.4-13.9=
7.39-1.7=27.88+6.31=1.36-0.08=91.81+4=
一、口算。
2.4-0.2=9.1+9.3=14.9+1=0.68-0.33=
2.8-0.1=7.9+4.2=6.4+3=0.56+0.45=
6.6-0.7=4.6+3=70.4+1=0.78+0.36=
1.8+0.6=9.1-4=6.5+4.3=0.71+0.44=
9-0.7=1.8+7.9=51.4+1=0.69-0.16=
二、笔算。
5.59+0.26=27.43+9.21=9.69-2.31=83.8-7.6=
7.37-6.38=90.2+9.21=9.46+0.4=33.59-1.62=
3.88+0.67=23.11-7.94=8.46+4.54=75.9+36.6=
8.82-4.43=55.18+8.61=2.44+0.96=82.97+7.08=
一、口算。
2.3-0.7=6.3+3.2=69.5+5=0.88-0.14=
1.5-0.7=9.5+1.6=6.5-1.7=0.54+0.36=
1.7-0.4=6+8.7=14.2-7=0.5+0.18=
2.4-0.9=5.5-2.2=6.9-5.1=0.87-0.03=
5.7+0.1=8.5+2.5=76.8-3=0.72-0.11=
二、笔算。
6.53+0.21=25.12-6.28=7.83-5.95=67.1-34.5=
9.49+4.43=70.38-6.16=5.57-0.02=50.81+7.91=
1.73-0.58=83.44-6.4=9.07+3.09=93+23.3=
7.86-6.32=55.23+1.23=2.94+0.98=52.19+6.64=
一、口算。
4.2-0.7=8.7+9.3=78.5+3=0.56-0.37=
1-0.4=6.1-0.4=6+2.1=0.59-0.39=
1.6-0.4=3.9+3.3=61.4+3=0.91+0.25=
1+0.4=8.2+4.9=9.4+4.2=0.65-0.07=
4.4+0.3=5.6+7.2=33.9-5=0.71+0.46=
二、笔算。
1.73-0.16=79.14-7.68=9.77+4.68=64.2+37.9=
7.65-5.81=58.68-1.97=2.9+0.74=85.94+7.22=
6.01-0.42=29.33-3=7.96+5.26=63.5-40.4=
8.44-4.16=57.06-6.67=9.69-0.59=26.65-9.74=
一、口算。
3.9+0.7=1.9+2.8=67.7+3=0.55-0.28=
8.9-0.9=9.1-2.8=9.6+2.3=0.93+0.34=
4.4+0.3=2.9+9.6=73.3-1=0.54-0.42=
4.6+0.5=5+2.6=6.9+4.7=0.83-0.22=
8.3+0.2=7.6+4=46.1-9=0.7+0.22=
二、笔算。
7.75-0.47=32.12-6.17=8.97-5.43=87.1-20.8=
8.83-3.22=59.64-3=7.36+0.74=85.6-3.58=
5.59-0.2=63.46-1.89=8.06-1.05=75.9-9.9=
7.28+2.25=58.27+6.64=5.12+0.14=64.53+6.99=
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