四年级数学下册小数加减法专项练习题17.docx
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四年级数学下册小数加减法专项练习题17.docx
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四年级数学下册小数加减法专项练习题17
一、口算。
2.1+0.1=0.8+2.4=64.9+2=0.53+0.31=
5.1+0.2=9-4=9+4.8=0.7-0.36=
6.6+0.4=6.5+2.3=63.9+5=0.51-0.48=
3.2+0.4=7.4-2.2=6.8-5.4=0.64+0.01=
4.8-0.9=3.3+6.6=14.6-7=0.6-0.33=
二、笔算。
3.94+0.31=38.49+5.85=8.44-3.52=62.5-25.9=
9.83+2.6=94.03+7.03=8.29+0.41=81.89+9.8=
6.72+0.71=30.68+2.87=8.95-2.94=82.3-28.5=
8.43+4.72=21.22-2.13=6.93+0.33=72.67+1.04=
一、口算。
1.3+0.7=8.9+5.9=54.4+1=0.78+0.4=
4.1-0.2=7+2.1=8.1-3.9=0.99-0.16=
8.7+0.4=8.1+1.7=91.4-7=0.51-0.26=
7.5+0.8=7.5-2.6=8.6-5=0.77+0.05=
7.3-0.1=2.5+4.2=16.9+1=0.78-0.1=
二、笔算。
1.48-0.78=84.22+6.96=7.25+3.21=55+47.2=
7.67-1.15=89.8+7.97=5.81+0.09=70.13-2.26=
3.76-0.66=32.15+2.03=9.52-2.79=59.9+14.4=
8.83-5.32=35.95+2.9=4.86+0.06=15.55-3.76=
一、口算。
3.7+0.2=5.2+2.8=41.6+1=0.61+0.22=
4.9-0.6=7.7-3.9=9.5+3.7=0.51+0.32=
3.6-0.4=0.3+0.8=76.9+7=0.92-0.13=
5+0.4=9.2+0.3=8.9-5.2=0.8-0.06=
5.8-0.1=6.9+9=69.1+7=0.85-0.2=
二、笔算。
2.48-0.72=69.84+4.42=8.68+6.41=51.6+4.1=
7.58-6.82=55.59+6.87=7.66+0.81=46.31+2.57=
6.04-0.03=52.61-8.67=8.85-1.51=60.1+43=
9.37+3.67=29.99-2.36=2.14+0.7=71.72-8.94=
一、口算。
4.2-0.2=3+5.7=13.4+2=0.98-0.46=
3.2-0.9=8.1-0.1=8.7+5.7=0.79-0.18=
1.4+0.1=0.3+2.6=21.3+9=0.85-0.15=
6.4-0.9=9.9-0.7=7.6-5.6=0.61+0.1=
1-0.8=5.2+0.3=43.9+3=0.85-0.39=
二、笔算。
7.83+0.28=91.33+2.73=8.68-1.56=96.9-6.7=
8.81-1.05=12.82-8.14=4.27+0.64=53.81+1.05=
3.57+0.88=94.93-6.67=7.97-6.19=99.8+38.9=
9.48-5.74=76.28+1.34=2.87+0.08=51.47-6.58=
一、口算。
4.7-0.7=8.5+0.9=73.9+8=0.63+0.05=
8.1+0.1=8-2.7=8.5+2=0.99+0.03=
8.1-0.4=6.2+2.5=84.2-4=0.84-0.2=
1.4-0.4=9.8+0.6=6.3+1.2=0.58+0.3=
8.7-0.8=2.5+2.1=21.1+6=0.87-0.01=
二、笔算。
9.2-0.38=98+8.08=8.68+6.27=65.2-40.9=
8.81-5.73=11.33-9.22=1.89+0.6=58.54+8.71=
2.25+0.66=39.55+7.54=8.37+4.64=72.9-8.5=
7.32-5.61=37.2+6.62=8.68-0.71=38.1+4.57=
一、口算。
7.2-0.8=5.8+8.4=69.8+2=0.7-0.02=
3.1+0.1=5.4+4.9=6.8+4.6=0.83+0.31=
7.2+0.8=0.8+4.6=72.7+2=0.76-0.1=
3.6+0.6=7.1-1.7=8.2+3.1=0.96-0.49=
3.4+0.1=8.6+1.9=85.6-5=0.8+0.04=
二、笔算。
9.03-0.9=30.11+8.83=7.68-3.51=72.3-48.7=
8-5.56=81.89+5.39=6.07-0.18=24.49-7.72=
3.35+0.42=58.73+1.23=8.46+4.65=59.4+35.1=
7.67-2.03=79.87+2.19=4.58-0.29=52.51-7=
一、口算。
5-0.8=6.8+5.2=15.3+3=0.66-0.38=
8.8-0.3=9.6+1.1=6.5-0.1=0.52+0.48=
1.4-0.9=1.2+7=50.7-7=0.68+0.1=
1.6-0.6=7.5-1.3=9.1-1.8=0.78-0.23=
6.1+0.8=9.3+9.3=52.9-1=0.5-0.28=
二、笔算。
6.79+0.77=98.23+7.63=8.35+3.1=72.5+44.9=
8.13+6.13=41.97-8.68=6.47-0.73=33.78+4.79=
5.53-0.8=12.38+1.86=7.27+4.36=55.8+29.8=
7.56+1.81=97.55-1.52=3.1+0.97=89.93-7.43=
一、口算。
8.6-0.4=6+3.8=53.6-4=0.72+0.27=
8.2-0.9=5.6-2.5=8.3-3=0.76-0.23=
3.4+0.7=8.9+4.6=30.3+1=0.56+0.45=
9+0.3=9.2+2.8=8.6-2.8=0.57+0.3=
8.9-0.3=9+2.5=92.4+2=0.75+0.45=
二、笔算。
8.84-0.69=78.11+8.03=8.71-1.97=54+16.3=
8.6-4.63=94.28-2.99=9.54-0.78=48.07+1.78=
8.66-0.42=73.28+5.43=7.49+3.43=56.1-44.4=
7.5-6.85=47.37+9.9=7+0.26=93.05+5.61=
一、口算。
6.6+0.4=0.6+6.5=34.3+1=0.73+0.39=
6.3-0.8=8.7+4.7=9.9+1.3=0.53-0.02=
4.6-0.2=2.5+5.6=48.6+4=0.56-0.29=
8.8-0.3=5.2+2.5=6.1-2.4=0.56+0.16=
2.2+0.5=6.9+3.1=12.5-1=0.81-0.03=
二、笔算。
1.51+0.1=28.69+1.75=7.19-5.55=85.1-40.5=
7.67+1.57=10.32-8.18=9.33-0.37=56.72-7.75=
8.15+0.95=13.48+2.32=7.25-3.94=87.6+38.5=
8.59+6.3=62.79+2.51=3.31+0.93=40.72+7.31=
一、口算。
7.5+0.7=4.3+5.3=85.2-2=0.74-0.09=
8.3-0.4=6.1+2.7=7.8-3.9=0.87-0.13=
5.6+0.6=1.4+8.7=86.4-3=0.52-0.28=
3.2-0.4=8.8+3.4=6.3+3.8=0.97-0.11=
3.9-0.1=7.1+9=40.8+5=0.5+0.19=
二、笔算。
8.02-0.38=52.5-8.63=9.13-1.04=70+41.2=
9.76+6.43=50.81-7.04=5.53-0.8=22.9-2.82=
3.75-0.66=82.78+4.21=9.87-6.16=79.8-2.3=
9.99-2.88=69.2+7.4=4.11+0.79=93.01-5.5=
一、口算。
5.2+0.9=5.7+2=19.7+9=0.72+0.42=
8.2-0.1=7+3.3=8.6+5.8=0.53+0.29=
3.7+0.9=2.8+3.4=92.9-3=0.72+0.21=
6.4+0.2=5.9+3.8=8.9+4.3=0.85-0.48=
1.5+0.9=4.7+2.9=20.1-7=0.8-0.41=
二、笔算。
9.4-0.49=25.38+2.77=7.59-4.75=50-19.1=
9.07+1.58=48.43-3.6=8.47+0.31=59.71-8.98=
3.22-0.18=77.71+9.1=9.23-3.52=97.4-23.2=
8.33-5.04=74.88-6.35=9.25+0.5=58.14-5.8=
一、口算。
3.2-0.5=0.3+4=36.9+5=0.72+0.21=
4.6+0.6=8.5-1.3=8.5+0.7=0.87+0.13=
8.7-0.6=5.5+3.2=48.6+9=0.99-0.21=
2.3+0.7=9.5-2.8=9.8+5.7=0.89-0.28=
8.8+0.9=7.3+8.5=75.8+6=0.53+0.03=
二、笔算。
3.53-0.72=95.68-7.17=8.52+4.77=82.7-40.8=
8.33-6.3=46.02+5.64=9.27+0.71=66.83+9.29=
7.86+0.87=87.31+4.63=9.8+3.7=70.8+36.1=
7.99+1.6=22.73-3.91=8.56-0.09=35.44+1.72=
一、口算。
7.3-0.1=1.7+9.8=96.6-3=0.76+0.33=
2.4+0.4=6.9+4=7.4-4.3=0.61-0.09=
7.8+0.9=9.3+0.4=93.5+7=0.94+0.25=
7.4+0.4=7.8+1.1=9.4-0.6=0.67-0.4=
5.8-0.5=4.1+3.9=51.9+7=0.93+0.47=
二、笔算。
2.77+0.81=90.1+4.97=7.71-3.17=65.5-33.4=
9.34-4.07=74.86-9.68=6.33+0.21=80.92+4.73=
8.73-0.24=76.78+8.1=7.44+5.69=79.6-21.3=
7.76+6.47=41.94+3.67=8.62+0.78=44.63+1.37=
一、口算。
2.1+0.8=1.5+8.3=99.7-4=0.53-0.31=
3.9+0.1=8.2-4.4=6.9+2=0.52-0.12=
8.5-0.6=3+3=21.4-7=0.86-0.12=
1.4-0.5=8.8-3.1=7.1-2.2=0.66+0.34=
8+0.2=4.9+1.7=96.8-8=0.63+0.38=
二、笔算。
5.73+0.74=86.71-4.29=9.85-3.72=88-39.6=
7.17-1.69=27.91-6.52=1.85+0.83=54.6+1.64=
6.96-0.16=69.43+3.79=9.52-5.03=80.8-5.5=
9.08+3.75=38.63+6.8=5.7+0.13=13.94+5.69=
一、口算。
9-0.7=7.4+4.9=80.8+1=0.62-0.05=
2.7+0.6=5.2+1.9=8.2+4.8=0.64+0.29=
7.7+0.9=4.4+9.4=99.6-7=0.69+0.16=
7.7-0.2=6.8+2=6.3+5.8=0.58-0.3=
6.7-0.7=5.3+0.3=52.2+6=0.78+0.46=
二、笔算。
5.57+0.48=45.79+3.94=7.22-3.98=67.4+14.9=
9.31+1.37=71.95-5.68=5.45-0.87=25.24-7.86=
7.54-0.69=17.97+6.68=8.14-1.76=76.3+44.1=
8.03+6.47=48.29+1.27=7.11-0.7=61.84+5.86=
一、口算。
3.3-0.3=7.2+5=22.1-6=0.83-0.41=
4.5-0.2=8.4+4.9=7.1-3.9=0.72+0.08=
6.6-0.3=9.4+5.3=29.3+9=0.56+0.11=
4.7-0.6=9.7-0.4=7.7+5.3=0.86+0.37=
7.7-0.2=3.6+6.3=19.1-7=0.82+0.45=
二、笔算。
1.69+0.59=11.08-1.16=8.8+2.61=58.4+27=
7.03+5.36=64.82+4.62=5.25-0.13=59.33+1.77=
1.98+0.32=42.57-3.77=9.12+5.34=61-33.9=
7.7+1.91=18.35+4.12=9.81+0.1=68.77-6.08=
一、口算。
7.4+0.6=4.6+5.3=11.2-6=0.97-0.12=
4.3-0.9=5.8-1.1=7.5+1.1=0.99+0.47=
8-0.9=9.1+3.5=64.7+9=0.56+0.01=
3.2+0.8=8.2+4.5=7.3+4=0.62-0.49=
7-0.7=7.8+3.9=15.5+2=0.75-0.4=
二、笔算。
7.49-0.94=18.68+4.6=7.98+4.32=51.3+19.1=
7.69-3.61=65.33+4.7=6.14+0.9=71.6-1.46=
5.78+0.35=35.16+5.11=8.6-6.25=58.7-35.2=
7.18+5.9=80.16+5.96=8.2+0.95=78.52-2.41=
一、口算。
6.3+0.9=9.5+8.8=97.5+3=0.59+0.12=
7.5+0.5=7.7+4.7=8.9-1.1=0.74-0.33=
1.8-0.1=6+5.3=72.2+1=0.99-0.28=
5.5+0.5=7.7+0.5=6.9-1.3=0.87+0.36=
1+0.7=4.9+8=77.4+5=0.82-0.48=
二、笔算。
3.35-0.58=99.01+7.44=7.75-4.53=91-1.8=
8.05+3.72=91.13+7.43=2.04+0.41=98.01+3.72=
7.8+0.56=45.47+5.29=8.65+2.64=76.2-38=
8.85-5.95=17.44-7.87=5.89+0.31=79.97+3=
一、口算。
3.8-0.5=8.8+0.5=40.4+9=0.86+0.47=
1.8+0.9=5.2+1.8=7.4+2.8=0.99-0.39=
3.8+0.9=0.3+0.6=38.2+8=0.65-0.04=
8.4+0.5=7+1.2=9-0.3=0.56+0.46=
6.9-0.8=4.9+2.6=92.2-5=0.78+0.24=
二、笔算。
3.17-0.58=44.57-9.46=8.29+2.41=51+1.2=
8.9+2.79=55.61-4.44=1.08-0.44=99.11-2.25=
2.73-0.19=47.08+8.41=7.42+6.27=77.8+18.5=
7.58+3.73=11.86+1.95=9.14-0.88=66.26-2.22=
一、口算。
5.9-0.6=0.2+3.3=90.6+7=0.74-0.46=
1+0.6=6.9-1.1=8.1-2.3=0.67-0.36=
6.6-0.3=7.4+3.5=60.5-9=0.54+0.27=
7.4+0.5=6.5-4.4=8.1+3.6=0.7-0.19=
1.8-0.3=6.4+0.2=96.5-8=0.62+0.43=
二、笔算。
2.11+0.9=89.65-8.57=8.85+3.58=52.3+41=
7.98+2.55=76.77+5.7=1.84+0.81=59.54+3.71=
6.8+0.09=94.03+5.18=7.19-3=92.3-26.2=
9.88-6.25=74.8-1.55=4.8-0.07=44.09+1.35=
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