四年级数学下册小数加减法专项练习题161.docx
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四年级数学下册小数加减法专项练习题161.docx
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四年级数学下册小数加减法专项练习题161
一、口算。
8.2-0.9=8.7+9=41.2-2=0.88-0.03=
5.7-0.7=5.1+2.9=9.4-3.3=0.78+0.41=
4.4-0.4=1.5+9.3=66.6-2=0.64-0.45=
6.4+0.8=6.1+3.5=7.6-3.7=0.79-0.04=
7.9-0.8=2+7.1=52.5+9=0.57+0.07=
二、笔算。
9.41+0.79=61.79-8.8=9.61+2.93=78.7+9.2=
8.45+5.23=63.05+3.55=7.03-0.84=25.44+1.78=
5.22-0.41=60.88-5.3=9.28-3.21=62.9-29.9=
7.3+2.58=40.56+4.67=5.2-0.93=12.1+7.83=
一、口算。
2.7+0.5=3.1+7.6=19.8+7=0.63-0.36=
7.3-0.4=8.3-2.7=8.8+4.1=0.75-0.43=
5.1+0.3=0.8+4.9=55.4-8=0.76+0.36=
7.7+0.9=8.3+1.9=6.5-0.3=0.91-0.45=
1.6+0.8=5.5+6.2=82.5-9=0.99-0.2=
二、笔算。
8.44+0.38=88.68+1.55=7.14-5.7=61.7-34.1=
8.04+4.24=14.61+3.3=9.95-0.21=41.92+7.63=
3.4+0.7=20.86-3.12=7.59+3.01=93.9+48.4=
7.65+1.18=12.56-7.56=1.61-0.99=89.61-4.42=
一、口算。
8.1+0.2=0.6+5.7=24.9-3=0.58-0.27=
8.6+0.9=6.1-4.3=8.3-1.6=0.7-0.16=
7.4-0.1=7.9+7.2=77.4+4=0.98+0.18=
5.9+0.6=5.3+3.9=6.8+1.2=0.8+0.49=
8.8-0.1=5.3+9.1=67.2-5=0.54-0.08=
二、笔算。
1.12-0.69=44.44-4.37=8.11+5.78=52.4-34.9=
9.64+2.91=73.61-6.81=4.33-0.54=24+8.21=
6.81-0.45=40.41-9.15=8.04-1=77.5+27.6=
7.86-6.02=62.07-7.56=3.76-0.02=54.56+7.46=
一、口算。
7.5-0.8=4.4+3.7=98.3-5=0.56+0.04=
6.4-0.6=9.4+1=8.4+2.7=0.72-0.38=
1.4-0.5=4.3+9.4=36.4+5=0.54+0.27=
7.1+0.9=9.9+4.1=9.6+1.4=0.67+0.24=
8.3+0.4=9.7+6=62.1-3=0.7+0.17=
二、笔算。
7.91+0.75=11.13+6.61=8.26+4.33=56.7-1.7=
7.62+3.62=10.83+8.31=9.11-0.92=43.16-9.49=
8.24+0.05=31.68+2.31=9.41-1.8=52.5+18.2=
7.52-4.99=71.93+3.62=6.07+0.19=95.46-5.35=
一、口算。
5.1-0.5=9.9+1.5=18.6-8=0.63-0.13=
8.2-0.5=7.7-0.2=8+1.1=0.64+0.28=
2.5+0.2=7.3+1.1=21.1+4=0.84+0.32=
7.2+0.2=9.3+4.9=9.5-5.5=0.96+0.46=
7.6-0.5=8.4+7.1=70.1-7=0.99+0.33=
二、笔算。
4.28-0.65=12.82-1.99=9.47+1.72=89.4+41.3=
9.93-6.35=86.48-9.71=6.85+0.72=18.48+8.57=
2.4+0.63=97.48-1.19=9.33+2.16=88.7+22.5=
8.18+1.66=44.51+6.32=1.43+0.31=73.28-7.55=
一、口算。
8.4+0.5=4.7+3.7=24.5-4=0.68-0.48=
2.4+0.6=6.1+4.9=9.4-1.9=0.7+0.49=
5.3-0.3=5.1+3=12.9-6=0.83-0.49=
5.7-0.3=5.3-0.9=6.1+4.2=0.78+0.12=
1.1+0.9=1.3+3.2=90.8-3=0.89+0.37=
二、笔算。
3.07-0.72=35.85+7.19=7.09-2.97=63.4-7.9=
8.6+6.76=95.48+7.66=6.61+0.95=80.84+2.97=
1.61+0.61=83+7.95=8.46-1.07=89.6-6.2=
9.61-6.62=61.55-5.87=2.51-0.17=52.15+7.83=
一、口算。
6.7+0.1=3.3+6.9=93.5-1=0.63+0.26=
8.2+0.3=7.3+3.3=9.7+4.4=0.89-0.34=
8.2-0.6=8.6+3=51.2-4=0.6-0.44=
4.6-0.1=7.6+1.7=7.5+0.7=0.5-0.31=
8.2-0.5=2.5+0.5=59.2-4=0.52-0.12=
二、笔算。
7.75-0.4=15.49-7.61=7.01-4.92=69.2+25.9=
7.71+2.49=10.02+4.21=7.27-0.76=77.44-9.97=
6.2-0.63=99.8-4.44=8.93-2.45=98.8-5.1=
8.73+3.9=81.14-5.75=6.55-0.06=25.23+6.71=
一、口算。
5.1+0.7=0.3+6.6=62.1-7=0.54-0.05=
3.3+0.4=5.1-2.3=7.5+1.2=0.97+0.14=
2.3+0.8=8.8+9.8=83.1+7=0.69+0.08=
1.2-0.2=7.5+2.2=6.6-3.5=0.71-0.12=
6.2-0.5=9.7+1.8=17.3+7=0.95-0.42=
二、笔算。
3.62+0.07=54.14-1.5=8.53-5.52=78.2-46.7=
9.47+5.43=13.69-6.45=7.34-0.81=82.55-1.75=
8.59+0.79=46.62+8.14=7.08+2.75=91.8-20.6=
8.31-1.16=94.97+7.44=1.69+0.31=64-4.31=
一、口算。
5.6-0.7=7.3+2.7=48.1-9=0.63-0.3=
1.1+0.3=6.1+4.2=8.3+2=0.9+0.18=
8.8+0.9=9.7+3.3=33.7+4=0.95+0.11=
4.9+0.6=6.9-3.9=8.1+1.4=0.78-0.2=
6.1-0.9=9.8+2.9=18.5+3=0.8+0.37=
二、笔算。
5.28-0.25=97.53-9.48=9.56+2.79=53.9+14.4=
8.34-6.68=50.95-5.13=4.67-0.99=37.98-9.15=
4.73+0.45=16.76-8.04=9.3+3.3=89.1+42.3=
8.25+1.81=33.11+2.37=2.86-0.56=56.46+8.1=
一、口算。
3.6+0.3=2.1+5.3=50.6-2=0.82+0.16=
8.6+0.9=6.4-0.7=8.9-1.2=0.5-0.4=
1.7-0.4=4.1+7.2=68.6-7=0.94+0.25=
7.1+0.9=5.5+2.3=9.8-4=0.51-0.22=
3+0.5=7.5+1.3=12.7-4=0.57-0.46=
二、笔算。
8.59-0.03=30.1-5.24=8.3-5.91=50.1+21.1=
8.09+1.73=35.02+5.55=6.2+0.23=34.88-6.97=
2.85-0.37=82.37-7.25=8.76-3.92=67.3+31.2=
9.33-2.25=41.91-1.97=8.06+0.5=39.72-1.23=
一、口算。
6.8-0.8=6.6+4.7=85.2-9=0.76+0.12=
9+0.1=9-2.4=6.5+3=0.89-0.1=
1.3-0.5=9.3+2=71.8+6=0.94+0.06=
5.4+0.8=5.5+4.8=9.6+1.6=0.98-0.3=
4-0.8=9.6+3.9=35.6+7=0.82-0.4=
二、笔算。
2.82-0.62=22.56-2.07=9.16-1.14=61.5+4.6=
7.54-3.9=78.67+8.05=9.54+0.04=32.4-7.78=
4.82-0.75=96.99-5.9=8.74-3.33=81.2-23.3=
8.97-2.91=23.16+7.95=1.28+0.13=16.11-1.84=
一、口算。
8.9-0.3=9.6+1.4=63.7+5=0.5+0.41=
5.7-0.9=6.6+3.2=6.4-4.4=0.67+0.42=
7.9-0.3=1.1+5=55.8+1=0.81+0.22=
6.2+0.6=5.4-2.6=7.9-2.4=0.86-0.04=
6.4-0.5=2.1+4=28.3+5=0.57-0.48=
二、笔算。
2.24-0.14=48.79+3.81=9.22+1.27=97.3+27.6=
7.23+4.27=48.49+7.06=5.93-0.81=66.24+9.71=
8.91+0.83=61.44-4.5=7.21-6.23=51.8+48.2=
7.91-5=29.05+2.59=3.62-0.81=78.73+5.62=
一、口算。
2.7-0.1=9.8+6.6=94.6+3=0.78+0.27=
7-0.2=9.6-0.1=7.5+2.5=0.5-0.43=
3.1+0.5=2.4+2.3=21.7-7=0.83-0.12=
8.1-0.8=6.3+2.5=9.4-1.7=0.93-0.32=
1.2-0.9=8.2+2.5=78.9+7=0.85+0.34=
二、笔算。
4.96+0.22=56.49+3.78=7.64-5.92=78.6+4.7=
9.63+1.87=29.18-6.11=2.29+0.47=79.18-6.82=
3.15+0.63=34.67-2.07=8.55-6.57=96.7-20.5=
9.11+3.87=14.47-8.79=8.4+0.61=59.43+6.51=
一、口算。
8.7-0.5=9+3.7=21.3+2=0.5-0.21=
1.2-0.5=5.5+3.1=7.4-3.8=0.76-0.22=
8.5-0.6=8.6+1.9=36.6-6=0.89+0.13=
5.4-0.5=6.2+4.3=9-4.6=0.71-0.21=
7.4-0.2=9.3+7.7=91.4+6=0.71+0.45=
二、笔算。
9.12+0.45=15.69-5.24=9.23+1.54=62.7-30.6=
9.77-1.57=35.01+1.26=2.72+0.43=22.01-2.38=
8.89-0.66=55.12-2.82=9+4.69=80.2+31.4=
9.78-3.96=74.49-2.33=7.88-0.97=39.52+5.51=
一、口算。
8.4-0.7=2.3+6.3=49.4-7=0.81+0.44=
3.4+0.8=5.6+2.2=7.8-0.8=0.99+0.18=
2.5-0.7=9+4.7=47.4-6=0.81-0.1=
5.2-0.4=6.6-3.7=9.1-1.8=0.57+0.48=
2.2+0.8=1.9+8=97.3+8=0.74+0.18=
二、笔算。
9.71-0.85=39.79+9.35=7.49-3.39=75.3+10.4=
8.57+2.32=41.33-1.96=4.16-0.46=79.05+1.51=
6.81+0.43=66.8-7.75=7.65+2.88=81+37.1=
9.76+3.72=99.85-8.18=5.21+0.57=84.3+7.59=
一、口算。
6.3+0.3=2.7+2.5=33.7-8=0.76-0.15=
5.7-0.4=8.1+3=9.2-4.6=0.76+0.09=
3.9-0.2=9.4+5.4=34.9-8=0.61-0.46=
3.1+0.9=9.7-4.4=9.1+5.3=0.97-0.48=
5.7+0.6=6.4+2.8=75.5-2=0.88-0.31=
二、笔算。
9.15+0.59=51.42+2.33=8.31+1.31=55.4-37.9=
8.78+5.79=77.2+3.28=2.82+0.89=71.93+7.57=
6.61-0.79=13.5-7.38=7.72-4.8=69+43.3=
9.68+3.13=72.71+6.76=3.27-0.1=88.7+7.28=
一、口算。
4.7+0.6=3.1+1.9=78.7+9=0.96-0.08=
4.8-0.7=6.2+1.9=8.9+4.5=0.76+0.28=
8.1+0.2=7.9+0.8=85.3+7=0.72+0.2=
1.7+0.8=8+0.2=9.6+3.5=0.88-0.4=
3.2+0.4=2.2+7.7=35.6-6=0.66-0.07=
二、笔算。
1.61+0.24=39.11-5.32=7.69+5.3=71.3+48.8=
9.21-5.81=38.79+2.12=6.13-0.24=58.81+5.3=
5.43-0.38=11.03+1.78=7.39-3.51=51.1-27.6=
9.31-3.8=34.86-3.38=9.09+0.29=28.05+6.44=
一、口算。
3.8+0.6=5.3+0.5=64.7-5=0.78+0.22=
2.1+0.3=6.4+2.3=8.7+1.7=0.88+0.32=
3.1+0.3=6.6+8.5=41.5+3=0.77-0.33=
5+0.8=5.4+2.5=7.9-0.2=0.77+0.3=
8.7+0.9=1.6+3.6=24.9-4=0.91+0.27=
二、笔算。
8.85+0.6=36.74+3.26=8.79+3.17=67.5+41=
9.13-5.14=99.55+8.82=2.56+0.73=77.46+8.33=
5.08+0.12=62.7+6.28=8.8-1.03=91.2+49.3=
7.83+5.66=32.78-2.35=7.72+0.71=90.52+4.11=
一、口算。
5-0.2=7+1.3=92.1+6=0.86-0.15=
2-0.6=7.7-4.6=6.2+3.7=0.78-0.35=
6.8+0.2=0.5+3.6=52.6+2=0.86+0.39=
3.3-0.8=5.6-0.8=8-3.6=0.91+0.02=
5.6+0.2=9+9.3=34.9-7=0.83-0.08=
二、笔算。
7.62+0.54=86.65-4.99=8.22+1.75=81.2-40.3=
8.03+2.72=21.74-9.17=5.21-0.11=71.86+4.79=
6.79+0.95=36.71-9.35=8.03+2.23=90.8-27=
9.63+2.41=93.93-9.18=1.29+0.81=88.92-9.83=
一、口算。
2.8-0.8=1.3+4.4=11.9-1=0.9-0.42=
7.2+0.9=8.8+0.8=9.6+5.6=0.8-0.34=
8.4+0.8=4.7+5.2=82.9+5=0.95-0.37=
4.8-0.7=5.6+3.4=6-0.1=0.89-0.03=
3.1+0.6=5.9+5.3=66.7+6=0.84-0.18=
二、笔算。
5.65-0.53=64.02-7.01=7.69+4.77=57.5-26.1=
9.06-3.49=53.25+1.78=2.44+0.33=56.6+4.61=
1.47-0.6=50.52-9.22=8.63-3.42=79.7-44.9=
7.25-4.68=36.9+7.77=7.74-0.82=82.71-6
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