四年级数学下册小数加减法专项练习题30.docx
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四年级数学下册小数加减法专项练习题30
一、口算。
2.2-0.7=0.6+2.8=63.6+2=0.73+0.48=
1.2-0.9=5.9+3.2=9.9-3.2=0.98+0.44=
8.2-0.5=9.9+2.9=75.6-9=0.89-0.29=
8+0.6=9.8+2.4=7.5-4=0.68+0.15=
6-0.4=1.5+6.7=36.6+6=0.56+0.29=
二、笔算。
2.35-0.04=67.3-5.86=9.13-5.2=90.4+30.4=
8.8+3.67=80.8-9.98=4.8+0.55=41.67-7.2=
1.13-0.38=86.47+5.61=9.17+5.33=91.6+12.9=
7.89+1.12=74.44+4.65=2.5-0.93=67.07+6.27=
一、口算。
1.1-0.6=8.2+4=32.2+3=0.98+0.19=
7.3-0.1=7.6+1.5=7.4+0.3=0.87+0.23=
7.5-0.9=3.9+3.9=56.7+8=0.63+0.37=
1.3-0.2=6.7-1.9=9-2.9=0.94+0.36=
4.1+0.1=5.7+1.9=18.2+2=0.96+0.34=
二、笔算。
2.28+0.22=92.06+1.36=7.25+5.63=50-32=
9.01-5.09=71.56+2.17=5.81-0.08=79.29-1.36=
2.79-0.75=39.26+3.98=7.62+5.69=78.4+34.5=
7.66+2.73=50.02-8.45=5.11-0.28=59.95+8.15=
一、口算。
9-0.2=1.6+7.5=19.4+6=0.63-0.07=
6.4+0.1=7.4+1.7=8.2-3.6=0.65-0.12=
3.7-0.3=6.6+5.9=39.1+9=0.71-0.27=
4.9+0.4=7.5+1.7=6.9-4.2=0.87-0.21=
5.6+0.2=6.4+6=89.7+6=0.59+0.28=
二、笔算。
2.44+0.6=84.54-8.7=8.23+2.12=63.2-36.5=
9.94+1.28=87.21+7.58=3.17+0.2=53.49+4.51=
8.33-0.69=61.57-9.39=9.57-1.64=50.6+45.5=
9.04+1.27=36.9-6.14=4.68-0.04=63.53+2.64=
一、口算。
1.9-0.7=3.7+3.6=47.7-2=0.6+0.3=
8.2+0.7=8.2-3.8=6.9-2.5=0.52+0.17=
7.7+0.6=3.8+1.6=71.9+7=0.59+0.27=
4+0.1=9.7+4.9=9.7+0.7=0.62+0.19=
3.5+0.2=8.1+6.5=86.6-1=0.66+0.29=
二、笔算。
6.94-0.11=31.43-6.15=7.77-5.02=72.9-46.1=
7.85+2.26=40.65-5.66=6.69+0.23=48.92-1.76=
5.28+0.81=73.89-5.92=8.78-6.2=92.3+27.2=
9.79+4.49=36.95-4.09=2.75-0.15=55.82+9.43=
一、口算。
5.6-0.2=4+4.4=95.9-5=0.76+0.23=
6.4-0.6=5.7+2.4=6.1+1.4=0.57-0.45=
1.9+0.1=7.2+6.1=37.1+9=0.66-0.25=
1.5-0.8=5.3-0.9=6.3+4.8=0.7-0.26=
2.6+0.7=9.7+4=11.8+5=0.65+0.12=
二、笔算。
7.3-0.85=73.33-6.82=9.87-5.04=57.8-25.6=
7.09+1.22=54.56+2.42=3.3-0.77=58.4+7.86=
2.81+0.1=91.1-8.07=9.71-2.44=97.3-8.2=
9.7-3.29=17.11-1.17=8.88+0.7=88.05+2.65=
一、口算。
5.7+0.9=7.3+0.8=56.9-6=0.75-0.26=
5.6-0.1=8.4+4.3=8.7+2.6=0.68+0.44=
1.8-0.6=3.3+6.1=28.4-2=0.97+0.43=
7-0.3=5.6-4.4=9.6+5=0.74+0.3=
4.8-0.6=5.1+4.2=63.3+3=0.62-0.29=
二、笔算。
7.77+0.22=54.72-1.44=7.96+2.21=91.8-23.7=
8.36-6.97=53.84+3.14=3.45+0.54=83.16+4.55=
7.59+0.98=22.32-3.74=9.24-3.67=61.2+35.5=
9.34-2.69=88.86+7.48=5.67+0.04=35.97+5.62=
一、口算。
4.8+0.4=6.3+3.2=38.7-7=0.79+0.32=
6.9+0.1=5.9-4.6=7.1-1.5=0.82-0.31=
2.1+0.4=9.7+3.2=69.6-6=0.79+0.41=
8.7+0.4=8.3+2.1=9.2+0.3=0.75+0.31=
2.8+0.9=5.2+0.2=33.5-3=0.71-0.47=
二、笔算。
8.26-0.22=72.59+1.63=7.43-2.32=58.2-11.5=
8.62+2.6=55.33+5=4-0.23=31.78+5.38=
6.68-0.31=81.87+9.63=9.29-5.07=85.2-26.8=
8.84+5.21=19.65+6.97=1.38-0.39=96.61-8.6=
一、口算。
5.2-0.8=3.3+3.2=19.8+4=0.82-0.46=
8-0.5=6+0.1=9.3-2.6=0.97-0.21=
4.7+0.7=2.7+3.9=34.7+6=0.97+0.16=
4.3-0.6=5.9+0.2=6.9-4.4=0.62+0.01=
3.3+0.6=1.2+6.3=42.6-4=0.86-0.01=
二、笔算。
8.94-0.45=89.41-1.61=7.55+2.5=82.5-12.6=
9.53+3.49=32.44+6.8=6.32-0.37=53.81+3.11=
9.52+0.5=74.89-6.56=7.53-1.51=69.8-19.6=
7.76-3.94=97.39+6.7=5.93+0.06=15.94+1.34=
一、口算。
2.6+0.3=4.1+1=44.1-8=0.9-0.38=
2.3-0.8=9.5+0.4=7-4.1=0.66+0.27=
1.5-0.2=7.9+9.6=96.8-9=0.77-0.33=
1.3-0.2=7+4.4=7.9-5=0.71-0.25=
2.4+0.4=8.6+8.2=56.4-6=0.6+0.15=
二、笔算。
2.98-0.5=77.02+2.9=8.78+2.38=69.3-7.7=
8.81-6.07=41.48+1.13=2.52-0.31=68.83-8.26=
2.64+0.43=88.7-3.03=9.1-5.93=99.1+11.8=
9.31+2.22=84.84-7.48=4.96-0.1=92.11-7.48=
一、口算。
7.9-0.8=4+3.8=32.5+9=0.82-0.48=
4.1-0.3=5.2-2.6=8.8-1.3=0.7+0.46=
1.9-0.7=9.1+4.9=21.5-2=0.69+0.11=
1.8+0.3=9.5-1.1=8.4+5.9=0.54+0.03=
5.3+0.5=9.9+3.5=66.1+1=0.71-0.36=
二、笔算。
2.33+0.6=43.49+2.73=8.82+3.16=69.2+20.5=
9.57-5.64=41.4+1.4=6.76+0.67=46.01-6.92=
3.9-0.14=94.83-9.94=7.69-5.46=93.2+41.2=
8.85-1.16=19.01-3.83=3.33+0.96=25.71+3.42=
一、口算。
3.9-0.5=6.9+9.5=44.5+3=0.83+0.4=
5.6-0.6=7.2-3.6=7.9+1=0.92+0.34=
7+0.2=3.3+0.7=17.8-9=0.73+0.23=
6.1-0.1=5.5+0.4=9.7+3.5=0.68-0.13=
9+0.4=3.3+9.6=16.5+9=0.53-0.25=
二、笔算。
6.83-0.3=76.23-2.34=8.57+4.25=76.4-29.8=
8.43-3.43=51+1.21=9.31-0.38=45.97-2.49=
7.81-0.78=59.47+3.54=8.74+4.12=69.5-24.8=
8.7+2.43=34.35+6.44=6.37-0.66=61.11-2.31=
一、口算。
5.5+0.4=1.2+1.8=87.3-7=0.98+0.09=
7.2+0.7=8.3+2.6=6-3.8=0.83-0.42=
5.8-0.1=7.6+5.7=95.8-4=0.94+0.31=
6.8-0.1=8.8+1.7=8.9-4.7=0.7+0.02=
5.6+0.3=0.6+5.9=44.7+2=0.62-0.41=
二、笔算。
2.45+0.9=17.2-1.82=7.2+6.89=70-43.4=
9.23+3.03=17.38-6.09=9.65+0.17=67.46-8.21=
3.59-0.46=85.74-3.66=7.97+5.38=70+20.7=
7.64+3.68=29.41-9.93=3.59-0.54=76.65-7.38=
一、口算。
5.4-0.5=2.7+5=79.6+3=0.58+0.13=
2-0.9=6.4-0.1=9.2+3=0.75+0.21=
8.3-0.2=6.6+4.7=93.8-3=0.74+0.05=
8.5-0.1=5.8+0.9=7.6+2.7=0.88+0.03=
2.4+0.4=2.8+8.2=58.7-5=0.87+0.16=
二、笔算。
7.67-0.73=45.51+6.48=8.9+1.38=74.4-42.2=
7.45+1.71=13.82+8.75=7.56-0.47=59.82-3.27=
1.51+0.31=17.02-2.25=8.36-5.3=72.7-19.6=
8.26-6.2=61.59+7.03=2.68+0.7=23.47+5.06=
一、口算。
3.8-0.1=9.1+5.9=95.4+8=0.87+0.35=
3.5+0.7=5.8+2.3=8.8-0.3=0.67+0.32=
6.4-0.4=5.2+9.1=95.8+5=0.72+0.38=
6.5+0.5=5.3-0.4=6.1+4=0.55+0.14=
6.5+0.5=1.6+3.5=24.6-5=0.84+0.19=
二、笔算。
5.16+0.1=94.76-1.86=7.63+3.13=55.8+5.1=
8.4+6.9=41.47+1.8=4.93-0.87=13.27+3.37=
8.99-0.7=26.7+8.77=8.54+4.39=93.8+37.4=
9.6+4.21=64.75-1.03=9.79-0.38=22.6+5.11=
一、口算。
4.4-0.8=5.3+2.5=38.8+5=0.81+0.45=
7+0.9=9.3+1.6=7.5+3.2=0.86+0.28=
1.5-0.8=2.3+4.7=88.5+5=0.85-0.11=
2.4+0.9=5.3+0.5=7.9+5.8=0.95+0.03=
7.6-0.6=6.7+6.9=78.9+4=0.97+0.08=
二、笔算。
3.61+0.71=26.91-9.28=8.44+4.82=69.3-27.6=
8.27-2.99=29.86+2.72=3.16+0.9=78.87+7.38=
6.31-0.9=77.17+1.81=8.26+3.59=56.9+17=
8.48-4.36=53.56+9.7=4.89-0.37=44.51-5.43=
一、口算。
2.1-0.4=0.4+9=47.7+8=0.62+0.46=
3.1-0.8=6.8+4.3=6.5-3.6=0.54+0.47=
2.1-0.2=0.9+4.8=64.5+4=0.75+0.11=
5.8+0.9=6.8+4.1=8.6-0.7=0.88-0.21=
7.2-0.4=6.4+9.1=75.1+2=0.9+0.16=
二、笔算。
7.83+0.56=67.24-5.5=9.92-3.52=87.3-35.4=
8.7-5.17=42.18+9.45=7.76+0.34=67.51-4.57=
5.21+0.83=57.3+3.51=7.36-2.66=67.2-47=
7.18-3.95=88.54-8.09=8.25+0.75=62.62-5.41=
一、口算。
4.4-0.7=9.4+4.9=79.6+2=0.52+0.03=
8.2+0.3=9.2+3.1=7.6+0.1=0.98+0.26=
5.8+0.8=7.1+7.8=98.8-1=0.93-0.04=
1.1-0.1=6.1+3.6=8.6+3.5=0.65+0.39=
3.8+0.9=0.3+2=79.9+4=0.79-0.31=
二、笔算。
2.69-0.79=54.16+7.69=8.68-5.17=51.6-46.8=
7.42-6.8=40.94-7.14=1.45-0.9=94.91-6.47=
3.05-0.08=65.27-8.03=7.87-6.5=69.5+39.5=
7.54-1.49=87.5+5.52=4.17+0.4=58.15+8.28=
一、口算。
8.6+0.3=3.1+8.3=97.8-9=0.98+0.14=
1.5-0.8=5.3-4.3=6.8-3.9=0.78-0.21=
4.3-0.4=2.7+3.1=82.6-3=0.96+0.31=
6.5+0.9=9-2.8=7.1-5.5=0.9-0.25=
2.7+0.4=9.5+4=90.9+6=0.62-0.06=
二、笔算。
5.5-0.17=88.3-1.52=8.67+3.58=67.7-47.1=
9.6-3.64=84.15-4.77=9.76+0.46=71.02-9.78=
7.64+0.75=26.4+5.51=9.46+3.43=90.6-44.1=
7.93-5.84=68.1+9.21=4.06-0.8=81.61-7.03=
一、口算。
3.4+0.7=5.9+7.4=45.3-1=0.76-0.21=
2.4-0.5=7.3-2.2=6.4+0.2=0.72+0.41=
7.9-0.3=8.5+2.4=27.2+9=0.84+0.11=
1.8-0.4=6.5-1.7=9.8+5.5=0.75+0.46=
1.1-0.5=6.3+3.2=37.6-7=0.9+0.38=
二、笔算。
9.2+0.12=90.95+7.45=7.46-3.89=52.1+4=
8.08+3.69=25.63-8.29=4.74-0.96=99.51+6.04=
4.95+0.26=65.17+1.15=8.93-1.85=81.4-30.2=
9.18-1.53=41.5+7.64=6.36-0.01=33.94+1.15=
一、口算。
6.9+0.6=5.5+0.8=92.9+1=0.74-0.31=
9-0.2=7.7-4.3=7.5-3.6=0.65-0.06=
5.6-0.4=5.6+0.2=58.4-9=0.86-0.26=
6.3+0.3=5.3+0.8=8.3-0.2=0.53-0.04=
4.3+0.5=0.1+2=44.7-7=0.92+0.46=
二、笔算。
1.17-0.66=17.48-7.61=9.86-5.89=91.2+27.2=
7.73+5.34=83.97+7.34=1.7+0.5=74.39-6.45=
2.37+0.95=16.72+5.53=7.82-2.87=62.4-44.5=
8.32-2.24=68.29-3.82=6.73-0.39=35.81-6.77=