0329四年级下册小数口算练习加减法brt.doc
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四年级下册小数口算练习
(1)8.42+9.48=42.56+3.124=91.26-30.35=
15.6十0.237=80-52.l=7.35—1.41=
2.6+l.4=1.9+0.8l=0.58+0.42=1.63—1.23=
(2)10-0.41=45-0.45=3.57+3=
6.14+3.83=7.93-1.64=5.23-2.36=
2.6+l.4=1.9+0.81=0.58+0.42=1.63—1.23=
(3)3.44+3.36=7.74-5.85=9.35-4.74=
38.63-3.48=1.16+4.77=8.17-5.26=
2.6+l.4=1.9+0.81=0.58+0.42=1.63—1.23=
(4)2.26-0.86=4.93+4.75=76.55+4.68=
31.1+4.5=31.9+3.4=3.45+4.6=
0.9-0.25=9.9—0.01=4—2.3=3.2一1.7=
(5)4.45+54.5=3+5.55=2.75+1.3=
39.4-2.75=67.3-1.26=61.9+6.2=
2.6+l.4=1.9+0.81=0.58+0.42=1.63—1.23=
(6)67.1-6.6=46.8-2.8=47.6-2.15=
10-0.41=45-0.45=3.57+3=2.6+l.4=
1.9+0.81=0.58+0.42=1.63—1.23=
(7)27.38+4.83=26.75+2.83=3.64-2.58=
6.52-3.44=15.31+13.51=5.5+4.5=3.27-2.49=
11.65-7.39=19.01-7.99=7.51+0.49=
(8)5.48-3.25=4.8+18.9=10.3+58.7=
8.03-4.56=9.03-8.57=8.25+1.55=
1.75+2.08=4.28-3.37=4.13+2.24=9.43-9.05=
(9)4.17+2.53=5.07-0.98=5.67-0.73=
13.18+5.27=5.16+7.89=26.8+3.02=
3.7+2.36=15.4+2.97=10.2-8.75=6.07-4.993=
(10)7.3-2.25=3.8+3.54=3.05-2.9=
12.7+6.58=7.81-3.735=12.16+5.347=
0.4-0.125=18.7+3.96=9.6+4.78=3.1-2.07=
(11)5.67-0.845=0.506-0.19=11.04-7.3=
1.4-0.405=62.1-17.07=1.4-0.405=
43.5-27.34=15.98-3.9=75.6-3.55=3.906+0.66=
(12)5.94+10.7=12.03+0.875=37.8+3.02=
0.704-0.25=10.1-0.55=10+10.1=
27+8.03=26+7.98=13.99+1=7.88+2=
(13)28-3.56=10-0.81=10-0.36=
20-0.92=8-7.089=95-9.85=
20-9.42=35.09-11=96.85-85=45.45-45=
(14)27.38+4.83=26.75+2.83=3.64-2.58=
6.52-3.44=15.31+13.51=5.5+4.5=
3.27-2.49=11.65-7.39=19.01-7.99=7.51+0.49=
(15)5.48-3.25=4.8+18.9=10.3+58.7=
8.03-4.56=9.03-8.57=8.25+1.55=
9.43-9.05=1.75+2.08=4.28-3.37=4.13+2.24=
(16)4.17+2.53=5.07-0.98=5.67-0.73=
13.18+5.27=5.16+7.89=26.8+3.02=
6.07-4.993=3.7+2.36=15.4+2.97=10.2-8.75=
(17)7.3-2.25=3.8+3.54=3.05-2.9=
3.1-2.07=12.7+6.58=7.81-3.735=
12.16+5.347=0.4-0.125=18.7+3.96=9.6+4.78=
(18)5.67-0.845=0.506-0.19=11.04-7.3=
1.4-0.405=62.1-17.07=1.4-0.405=
3.906+0.66=43.5-27.34=15.98-3.9=75.6-3.55=
(19)5.94+10.7=12.03+0.875=37.8+3.02=
0.704-0.25=10.1-0.55=10+10.1=
27+8.03=26+7.98=13.99+1=7.88+2=
(20)28-3.56=10-0.81=10-0.36=
20-0.92=8-7.089=95-9.85=
20-9.42=35.09-11=96.85-85=45.45-45=
7.05-0.05=0.78—0.38=3.5十5.5=5.5—3.9=