四年级数学下册小数加减法练习题精选49.docx
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四年级数学下册小数加减法练习题精选49.docx
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四年级数学下册小数加减法练习题精选49
一、口算。
5.9-0.4=4.1+4.5=28.6+8=0.98+0.28=
4.9+0.6=9.2+0.1=6.7-3.1=0.79+0.11=
4.9+0.1=6.6+0.8=42.4-3=0.56+0.28=
3.7+0.5=8.2-4.9=9.7-4.4=0.56-0.19=
2.5+0.7=4.4+8.9=81.9-9=0.5+0.23=
二、笔算。
3.92+0.53=90.48+2.9=9.75-2.41=85.5-18.2=
8.91+5.2=71.48+2.52=4.98-0.45=77.91-3.48=
1.02-0.66=98+5.19=7.14-4.96=68.5-27.1=
8.51-1.08=43.07-9.75=4.42-0.66=55.22+3.55=
一、口算。
3+0.7=9.2+3.3=30.4+7=0.64-0.36=
7.9-0.8=8.5-3.2=7-1.1=0.61+0.12=
1.4+0.9=5.1+7.9=64.7+5=0.66+0.07=
5.8-0.8=5.9+3=7.3+2.8=0.94+0.13=
3.1+0.3=3.5+8.9=63.8-6=0.54-0.34=
二、笔算。
2.8-0.31=72.09+7.65=9.05-4.15=86.5+1.1=
7.96+1.97=38.02-2.58=9.65+0.13=69.21+7.31=
2.18-0.38=54.67+3.96=9.13+3.85=61.1+32.9=
8.8+3.56=96.07-7.86=1.79+0.67=84.01+7.5=
一、口算。
5.9+0.2=9.1+7.3=52.2-7=0.56-0.25=
3+0.8=5.9+4.8=9.7+2.6=0.53-0.4=
8+0.6=3.8+9.2=74.2+1=0.95-0.46=
5+0.4=9.1+3.1=9-0.6=0.5-0.37=
4.9+0.9=1.7+2.9=21.6+8=0.68+0.48=
二、笔算。
2.19-0.24=33.06-7.7=8.49-3.62=82.4+1.9=
7.39-5.41=29.86+8.85=1.12-0.76=17.93-6.82=
5.17-0.52=62.96+7.86=8.12+6.47=89.5+35=
8.08+6.32=15.97+1.56=2.96-0.78=58.39-3.85=
一、口算。
8.4+0.3=6.2+7.7=50.5+6=0.85+0.44=
8.7+0.4=7.6-1.7=8.4-4.7=0.79-0.2=
5.9-0.1=7.1+7.7=52.9+4=0.63+0.24=
8+0.6=8-3.6=8.5-5.4=0.57+0.22=
5.9-0.3=8.7+4.6=71.1+4=0.54+0.27=
二、笔算。
1.39-0.56=29.33+7.56=9.52-2.62=54.6-49.2=
7.19+6.96=83.41-3.09=3.36-0.69=51.78+8.72=
9.75-0.01=57.26+9.17=8.74-4.96=88-10.5=
9.22+1.5=15.22+3.28=1.46+0.05=29.16-7.3=
一、口算。
6.1-0.2=9.1+9=12.7+2=0.69+0.37=
3+0.4=7.8+0.4=9.8+3.5=0.95-0.06=
2.5+0.9=7.8+1=70.8+4=0.71+0.1=
1.5+0.5=6.2-4.7=9.9-4.3=0.97-0.34=
1.1-0.5=2.7+2.6=64.5+4=0.71-0.19=
二、笔算。
5.2-0.39=46.73+4.84=8.28+5.93=83.6+21.3=
8.55+4.46=63.74+3.85=5.15+0.39=87.86+4.76=
9.74-0.95=92.65-3.25=7.86-1.87=90.3+9.4=
7.51+2.06=70.39-7.51=9.52-0.2=40.46-9.49=
一、口算。
8.4-0.3=6.3+1.5=37.7+6=0.95-0.3=
7.1-0.3=5.1-3.6=6.4+5.6=0.81-0.01=
8.1-0.7=7.5+0.3=13.4+6=0.56+0.47=
2.3+0.6=8.6-2.3=9.6+4=0.93-0.15=
8.3+0.2=3.7+4.1=79.8+2=0.68+0.44=
二、笔算。
7.02+0.66=53.29-6.62=8.29+2.54=80.8+25.9=
8.14+1.44=29.25-4.33=9.89-0.49=54.53-6.94=
6.7-0.46=67.33-8.72=7.34-6.66=96.8-48.7=
9.14-3.85=76.92-1.86=5.91+0.13=35.2+7.01=
一、口算。
5.2-0.3=6.1+5.2=97.2+1=0.84-0.45=
8.8-0.9=5.4+0.9=7.5+5.1=0.56+0.45=
7.8+0.7=8.6+0.1=21.7-2=0.95-0.35=
3.4-0.1=9.1-2.5=7.7+2.5=0.55-0.37=
1.2-0.9=6.8+0.3=44.9-7=0.65-0.15=
二、笔算。
3.37+0.58=43.33-1.53=9.69+1.45=89.9+9.7=
7.01+3.39=31.4+3.76=6+0.75=96.6+3.36=
1.16+0.94=42.69+1.46=9.68-6.04=92.9-3.7=
9.93+5.06=85.76-7.82=8.36-0.6=15.17+3.34=
一、口算。
2-0.2=7.3+9.8=14.8+2=0.53-0.08=
5.4+0.9=5.3-3.8=8.7+0.8=0.72-0.15=
1.3-0.1=2+9.4=83.6+6=0.88-0.07=
5.6-0.1=7.6+4.6=8.1-1.6=0.98+0.4=
5.8+0.8=6.2+3.5=58.1+1=0.81-0.46=
二、笔算。
8.51+0.13=29.32-9.86=7.02+5.85=71.2-16.9=
8.12-5.45=80.09-3.36=3.66+0.41=97.72-5.37=
9.32-0.51=78.41-6.92=8.24-5.84=72.8+4.3=
9.83-6.46=48.28-3.17=6.89+0.53=31.37-5.96=
一、口算。
4.6+0.4=0.8+0.3=37.7-7=0.61-0.44=
7.7-0.9=6.4+0.9=6.8+4.7=0.6-0.05=
4.2-0.7=5.4+5.7=21.1-5=0.88+0.28=
6.2+0.1=5.8-2.9=8.1+4=0.77+0.09=
7.7-0.4=6.7+1.6=53.4-7=0.91-0.17=
二、笔算。
2.48-0.65=50.43-7.91=9.94-2.5=93.8-2.7=
8.57-5.63=13.26+8.71=1.08+0.16=56.15+4.62=
6.69+0.16=44.11+4.31=8.78+2.72=70.7+19.1=
8.47+2.95=80+3.16=1.29+0.2=28.09+7.46=
一、口算。
4.6-0.8=5.5+1.3=29.1+5=0.74-0.25=
7.9+0.6=8.9-3.2=8+0.5=0.86-0.47=
4.8+0.8=2.4+6.9=15.3+3=0.81+0.45=
3.5+0.2=8.6+2.7=6.1-4.3=0.5+0.29=
8.4+0.6=5.3+2.5=57.7+7=0.77-0.23=
二、笔算。
6.91-0.54=45.84+4.26=9.47-3.07=72.5-49.5=
8.8-2.03=44.65-5.44=1.5+0.08=68.84+6.01=
8.8+0.11=55.17-4.53=9.9-1.99=95.8-48.1=
9.82+4.11=60.05+2.78=3.39-0.62=78.97+9.19=
一、口算。
4.1+0.2=1.5+4.4=19.5-3=0.51-0.16=
2.4+0.5=5.6-3.8=7.1-3=0.91-0.18=
5.4+0.8=0.5+2.1=92.6+2=0.59+0.37=
5-0.1=9.5-1.2=9.9-0.3=0.57-0.39=
1.9-0.8=7+2.4=57.3-7=0.53-0.18=
二、笔算。
2.23+0.85=12.02-4.56=9.48+1.29=88.4-37.5=
7.54+6.57=33.83+1.81=1.54+0.69=50.53-4.52=
1.87+0.57=25.64-1.54=7.72+3.48=53.8-20.8=
8.29-3.83=22.51+2.99=8.53-0.86=40.28+6.2=
一、口算。
6.6+0.3=7+3.4=65.6-5=0.67+0.38=
7.5-0.9=6.8-4=9.5+5.2=0.77-0.1=
7.7+0.3=8.8+1.8=66.1-3=0.58+0.45=
2.1-0.6=7.7+3.9=9.3+3.3=0.99+0.05=
3-0.9=1.4+2.6=84.9-3=0.96-0.06=
二、笔算。
7.6-0.56=44.51+4.88=8.2+1.26=77.1+3.5=
7.86-2.73=45.85+4.54=8.66-0.98=37.17-2.68=
4.74+0.78=94.03-7.76=7.22-2.77=85.7+38.4=
9.9+5.04=34.76+8.46=3.65+0.93=68.19-2.61=
一、口算。
2.2-0.9=6+3=68.5-5=0.54-0.34=
5.5+0.7=7.4-4.5=7.3+1.4=0.79-0.22=
6.5-0.9=9+8.9=57.9-5=0.62+0.25=
8.9+0.1=8.6-0.9=6+2.8=0.81+0.3=
1.3+0.8=2+2.3=31.7+5=0.77-0.48=
二、笔算。
2.51-0.86=73.75-3.21=7.48+1.39=68.4-9.4=
8.5+4.45=18.8+9.58=8.95-0.82=35.06+9.84=
5.67+0.28=41.33-7.22=8.79+3.3=56-34.5=
9.09-5.89=32.33+7.44=9.52+0.64=60.66-3.95=
一、口算。
1.4+0.7=9.7+7.2=61.6+6=0.79-0.08=
1.7+0.9=7-1.7=9.1-4=0.69+0.13=
3.4-0.3=1+7.8=58.9-3=0.85+0.4=
6.3-0.1=5.8+3.5=9.5-2.8=0.91+0.36=
2.9-0.8=1.6+9.2=88.4-9=0.52-0.12=
二、笔算。
6.18-0.36=70.24+5.88=7.45-2.24=77.7+30.2=
8.43+6.27=71.38+3.46=8.06+0.4=16.26+3.67=
7.61-0.03=25.83+7.21=9.45-6.33=91.3+32.6=
9.67-4.59=29.25+2.37=6.37+0.5=73.23+1.41=
一、口算。
4.2-0.4=6.3+9.9=34.2+3=0.73-0.19=
8.5+0.3=8.1+1.2=6.4-5.5=0.89-0.32=
5.1+0.5=5.8+1.6=84.5-3=0.6+0.25=
2.3+0.3=9.8+0.5=8.5+2=0.93+0.45=
2.5-0.9=3.1+8.6=12.3-6=0.76-0.49=
二、笔算。
7.71+0.19=98.79+9.17=7.12+5.02=78.9-25.1=
7.16+6.6=32.62+9.35=6.52-0.91=82.57-1.26=
2.95-0.3=83.97-6.07=7.13+2.9=82.8-9.6=
8.08+2.79=68.84+4.54=4.37-0.7=98.09+5.59=
一、口算。
5.7-0.7=2.4+3=92.4+8=0.82+0.01=
7.8+0.1=9.5+1.2=6.7-5.8=0.98-0.2=
4.6-0.3=0.7+2.4=90.4-4=0.88-0.17=
2.4+0.9=7.9+1.5=7.6+5.7=0.75-0.15=
2.1-0.7=5.8+4.1=53.7+8=0.92+0.49=
二、笔算。
6.5-0.73=39.52+7.3=9.44-2.36=88.8-15.2=
9.06-2.79=60.58+3.96=6.22+0.76=85.86+5.8=
2.46-0.02=30.43-6.94=9.97-4.1=80.5+17.4=
7.52+3.87=23.67+5.47=5.2+0.72=23.07-6.43=
一、口算。
3.9-0.8=4.3+4.5=60.4+3=0.55+0.29=
5.6-0.2=5.2+2.4=6.3-5.3=0.85+0.2=
8.9-0.4=1.6+9.7=37.3+9=0.94-0.17=
9-0.4=8.4-3.9=7.9+2.6=0.85-0.43=
6+0.5=6.4+2=48.6+2=0.67+0.16=
二、笔算。
5.63+0.45=88.55-5.94=7.48+6.19=75.6-41.4=
7.33+4.6=70.88+5.68=8.1-0.46=91.84+1.93=
1.54-0.8=92.19-3.85=7.09+4.33=55.1-2=
9.84-6.72=37.09-2.35=3.85+0.94=58.18-3.83=
一、口算。
4.1+0.5=9.3+3.9=55.7+3=0.73+0.49=
5.7+0.7=8.7-1.7=8.3-0.8=0.85+0.33=
6.7-0.9=8.7+8.9=75.5-4=0.8+0.02=
3.1-0.7=9-3.2=7.6+4=0.69-0.25=
5-0.3=8.8+3.6=21.5-6=0.64-0.46=
二、笔算。
6.6-0.37=40.07+2.14=7.62-5.84=66.8+38.3=
8-1=70.09+1.97=2.27+0.49=45.98-1.6=
6.96-0.84=45.4-5.28=8.59+3.02=99.7+2.2=
9.94-2.38=58.66-6.77=5.14-0.9=57.06-1.82=
一、口算。
5.3-0.1=7.2+6.8=31.2-5=0.97+0.09=
7.9-0.3=5+2=9.2-5=0.65+0.27=
3.8+0.4=8.8+7.1=78.3+7=0.75-0.09=
1.9+0.1=7.1+1.5=7.6+2.1=0.86+0.48=
6.7+0.3=7.2+9.3=58.7+8=0.9+0.48=
二、笔算。
4.07+0.45=36.6+3.83=8.82+5.47=66.4-44.4=
8.55-1.98=57.86+8.87=6.12-0.7=27.67-1.2=
7.19-0.56=13.9-7.09=7.22+1.03=76.2-46.4=
8.38-6.43=23.55-5.08=3.22+0.9=10.58-1.05=
一、口算。
3.4-0.7=9.7+0.6=97.6-7=0.77+0.12=
4.8-0.3=8.9+3.5=6.5+4.5=0.87-0.46=
8.1+0.6=6.4+4.3=32.7+2=0.95+0.13=
7.7+0.2=6.4-0.1=7.5-0.1=0.9-0.46=
2.7+0.1=1.7+9.9=91.8+4=0.52-0.47=
二、笔算。
1.1-0.43=94.53-4.55=9.04+2.9=54+19.1=
7.81+2.18=65.56+2.05=8.3-0.82=71.71+9.46=
1.16+0.91=96.44+1.69=8.21+4.8=61.7+12.2=
9.77-3.6=33.36+9.13=5.91+0.58=49.32-7.38=
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