4.7+2.3= 4.5×2= 6.9-2.5= 7.2×0.8=
6×3.4= 0.62-0.32= 1.4×0.5= 0.75×100=
0.02×0.5= 3.6÷0.3= 6.3÷7= 5.6÷100=
0.75÷0.25= 0.125×8= 4.8÷0.3= 0.96÷2=
0.56÷28= 0.36÷0.4= 0.64÷0.8= 0.72÷3.6=
3.6÷24= 0.8×1.1= 7.2+12.8= 46.7-3.8=
12.8÷4= 5.2÷13= 12.5÷5= 1.64÷41=
10÷20= 24÷15= 8.65×10= 0.35×0.6=
3.08×0.01= 4.95×1000= 6.9×0.1= 0.4×0.5=
2.4÷0.8= 10.8÷9= 9.6÷0.8= 0.108÷2=
4.95÷0.9= 9.65÷0.1= 0.325×100= 2.5×8=
0.56÷0.7= 0.125×4= 3.28×0.1= 3.9÷0.13=
7.2×0.1= 0.01×0.1= 0.25×0.4= 1.6÷0.8=
1÷2.5= 1.25×0.8= 3.2÷0.04= 0÷1.7=
0.22×102= 9.6÷0.8= 5×0.24= 4.5-0.05=
3.9÷0.13 16.5÷0.5= 5×0.12= 24×0.5=
4.8×0.5= 2.8+4.2= 0.84÷2.1= 5÷0.25=
7.8÷0.01= 5.4÷0.6= 3.2÷5= 7×0.62=
0.56÷0.8= 7.4-2.8= 0.18÷0.2= 0.16÷8=
4.5×0.02= 8+7.2= 1.2×30= 0.012×0.2=
7.3×0.3= 9÷6= 3.6÷0.12= 7.8÷0.6=
2÷5= 4.5+5= 0.3÷0.6= 0.96÷0.2=
10.5×0.4= 7.3+0.27= 8×0.125= 0.54÷0.6=
0.61+0.39= 0.56÷28= 10÷20= 4.08÷0.4=
11-9.4= 0.8×0.11= 0.72+12.8= 5.6÷0.01=
2.3×100= 0.75×100= 0.108÷2= 10.8÷9=
0.7÷0.8= 16-5.07= 4.2×0.4= 0.72×6=
12÷0.5= 5.2×0.4= 12.2÷0.2= 5.6÷100=
0.41+3.7= 0.02×0.5= 7.2-0.8= 1.4×0.5=
84÷0.21= 0.75÷0.25= 2.5×16= 0.108÷2=
1.75+32.5= 16-5.07= 5.2÷13= 1.64÷41=
1.02×0.2= 0.26×0.3= 8.4×0.02= 1.29×6=
0.8×0.05= 12.6÷0.03= 8.71÷0.1= 21÷0.21=
0.8×0.13= 0.34÷17= 8.08÷0.4= 0.5×2.2=
1.24÷4= 3.27+0.63= 5.02×0.3= 0.3×0.5=
6.4÷4= 7.2÷1.8= 0.7÷0.35= 0.72÷1.44=
0.48÷0.04= 1.25÷2.5= 5.5+55= 16.8÷8=
0.54+2.2= 3.5-0.05= 2÷0.02= 0.25×40=
1.5×0.6= 0.32÷0.8= 12.25÷0.5= 73.5×0.1=
46.5+52.5= 0.45×102= 1.25×88= 2.64+3.85+1.54=
8×1.25= 5.6÷3.5= 4.2÷0.7÷6= 0.4×8.6×25=
0.27÷0.3= 2.5×101= 0.65×101-0.65= 2.6×7÷2.6×7=
分析:根據(jù)小數(shù)四則混合運算的順序計算,大多是口算較簡單.
解答:
解:4.7+2.3=7 4.5×2=9 6.9-2.5=4.4 7.2×0.8=5.76
6×3.4=20.4 0.62-0.32=0.3 1.4×0.5=0.7 0.75×100=75
0.02×0.5=0.01 3.6÷0.3=12 6.3÷7=0.9 5.6÷100=0.056
0.75÷0.25=3 0.125×8=1 4.8÷0.3=16 0.96÷2=0.48
0.56÷28=0.02 0.36÷0.4=0.9 0.64÷0.8=0.8 0.72÷3.6=0.2
3.6÷24=0.15 0.8×1.1=0.88 7.2+12.8=20 46.7-3.8=42.9
12.8÷4=3.2 5.2÷13=0.4 12.5÷5=2.5 1.64÷41=0.04
10÷20=0.5 24÷15=1.6 8.65×10=86.5 0.35×0.6=0.21
3.08×0.01=0.0308 4.95×1000=4950 6.9×0.1=0.69 0.4×0.5=0.2
2.4÷0.8=3 10.8÷9=1.2 9.6÷0.8=12 0.108÷2=0.054
4.95÷0.9=5.5 9.65÷0.1=96.5 0.325×100=32.5 2.5×8=20
0.56÷0.7=0.8 0.125×4=0.5 3.28×0.1=0.328 3.9÷0.13=30
7.2×0.1=0.72 0.01×0.1=0.001 0.25×0.4=0.1 1.6÷0.8=2
1÷2.5=0.4 1.25×0.8=1 3.2÷0.04=80 0÷1.7=0
0.22×102=22.44 9.6÷0.8=12 5×0.24=1.2 4.5-0.05=4.45
3.9÷0.13=30 16.5÷0.5=33 5×0.12=0.6 24×0.5=12
4.8×0.5=2.4 2.8+4.2=7 0.84÷2.1=0.4 5÷0.25=20
7.8÷0.01=780 5.4÷0.6=9 3.2÷5=0.64 7×0.62=4.34
0.56÷0.8=0.7 7.4-2.8=4.6 0.18÷0.2=0.9 0.16÷8=0.02
4.5×0.02=0.09 8+7.2=15.2 1.2×30=36 0.012×0.2=0.0024
7.3×0.3=2.19 9÷6=1.5 3.6÷0.12=30 7.8÷0.6=13
2÷5=0.4 4.5+5=9.5 0.3÷0.6=0.5 0.96÷0.2=4.8
10.5×0.4=4.2 7.3+0.27=7.57 8×0.125=1 0.54÷0.6=0.9
0.61+0.39=1 0.56÷28=0.02 10÷20=0.5 4.08÷0.4=10.2
11-9.4=1.6 0.8×0.11=0.088 0.72+12.8=13.52 5.6÷0.01=560
2.3×100=230 0.75×100=75 0.108÷2=0.054 10.8÷9=1.2
0.7÷0.8=0.875 16-5.07=10.93 4.2×0.4=1.68 0.72×6=4.32
12÷0.5=24 5.2×0.4=2.08 12.2÷0.2=61 5.6÷100=0.056
0.41+3.7=4.11 0.02×0.5=0.01 7.2-0.8=6.4 1.4×0.5=0.7
84÷0.21=400 0.75÷0.25=3 2.5×16=40 0.108÷2=0.054
1.75+32.5=34.25 16-5.07=10.93 5.2÷13=0.4 1.64÷41=0.04
1.02×0.2=0.204 0.26×0.3=0.078 8.4×0.02=0.168 1.29×6=7.74
0.8×0.05=0.04 12.6÷0.03=420 8.71÷0.1=87.1 21÷0.21=100
0.8×0.13=0.104 0.34÷17=0.02 8.08÷0.4=20.2 0.5×2.2=1.1
1.24÷4=0.31 3.27+0.63=3.9 5.02×0.3=1.506 0.3×0.5=0.15
6.4÷4=1.6 7.2÷1.8=4 0.7÷0.35=2 0.72÷1.44=0.5
0.48÷0.04=12 1.25÷2.5=0.5 5.5+55=60.5 16.8÷8=2.1
0.54+2.2=2.74 3.5-0.05=3.45 2÷0.02=100 0.25×40=10
1.5×0.6=0.9 0.32÷0.8=0.4 12.25÷0.5=24.5 73.5×0.1=7.35
46.5+52.5=99 0.45×102=45.9 1.25×88=110 2.64+3.85+1.54=8.03
8×1.25=10 5.6÷3.5=1.6 4.2÷0.7÷6=1 0.4×8.6×25=8.6
0.27÷0.3=0.9 2.5×101=252.5 0.65×101-0.65=65 2.6×7÷2.6×7=49
點評:此題主要考查了學(xué)生的口算能力.
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4.7+2.3=4.5×2=6.9-2.5=7.2×0.8=
6×3.4=0.62-0.32=1.4×0.5=0.75×100=
0.02×0.5=3.6÷0.3=6.3÷7=5.6÷100=
0.75÷0.25=0.125×8=4.8÷0.3=0.96÷2=
0.56÷28=0.36÷0.4=0.64÷0.8=0.72÷3.6=
3.6÷24=0.8×1.1=7.2+12.8=46.7-3.8=
12.8÷4=5.2÷13=12.5÷5=1.64÷41=
10÷20=24÷15=8.65×10=0.35×0.6=
3.08×0.01=4.95×1000=6.9×0.1=0.4×0.5=
2.4÷0.8=10.8÷9=9.6÷0.8=0.108÷2=
4.95÷0.9=9.65÷0.1=0.325×100=2.5×8=
0.56÷0.7=0.125×4=3.28×0.1=3.9÷0.13=
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1÷2.5=1.25×0.8=3.2÷0.04=0÷1.7=
0.22×102=9.6÷0.8=5×0.24=4.5-0.05=
3.9÷0.1316.5÷0.5=5×0.12=24×0.5=
4.8×0.5=2.8+4.2=0.84÷2.1=5÷0.25=
7.8÷0.01=5.4÷0.6=3.2÷5=7×0.62=
0.56÷0.8=7.4-2.8=0.18÷0.2=0.16÷8=
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