11.【解答】解:
5.09÷10=0.509 12.5×0.8=10 0.5÷0.25=2 0.25×6=1.5
45.6÷1=45.6
32.1×0.2=6.42
0.4×0.5=0.2 0.54÷0.9=0.6 10.2÷0.01=1020 12.5×0.8=10
12.【解答】解: 4÷5=0.8
1.8÷0.03=60 75÷2.5=30
0.2×25.4=5.08
3.6+4.4=8 10﹣5.2=4.8 3.4×0.2=0.68 7.8÷6=1.3
13.【解答】解: 3.6÷0.3=12
6.3÷7=0.9 5.6×100=560
0.25×4=1 0.72×3=2.16
0.56÷28=0.02 36÷0.9=40 0.64+0.8=1.44 1.2×20=24
14.【解答】解: 3.4÷2=1.7 6.3÷0.9=7
2.7÷0.3=9 7÷5=1.4
6.12÷0.5=12.24 2.9÷5÷0.2=2.9
0.42÷6=0.07 4.12×2=8.24
1.53+2.4=3.93 4.8×0.5=2.4 6.4÷80=0.08
4.6÷0.5=9.2
40×0.41=16.4 30.9×9=278.1 10×4.1=41
15.【解答】解:
0.25÷5=0.05 0.72÷0.9=0.8 3.145×100=314.5 7.2÷3.6=2 1÷50=0.02 12.4÷4.1=3
16.【解答】解:
0.35÷5=0.07 0.3×2=0.6 0.3÷0.2=1.5 0.7×0.9=0.63
0.01+0.99=1 7.6÷7.6=1
1.25×4=5 50﹣0÷2.5=50
0÷7÷3=0
2.4×5=1.2 4.9×0=0 2×0.45×5=4.5
17.【解答】解:
0.64÷1.6=0.4 1.4×0.5=0.7 2.7+7.2=9.9 4.3+2.7=7
18.【解答】解: 0.8÷10=0.8 237﹣9=226
25+8=33
187÷1000=0.187 0÷58=0
0.001×100=0.1
0÷1.5=0
0.72÷0.9=0.8 2.7×0.3=0.81
10.9﹣8.9=2 24÷0.3=80
200×0.07=14 0.25×4.9=1.225 4÷0.8=5
257+0=257 0×0.008=0
6.0805×1000=6080.5 24×5=120
19.【解答】解:
0.63÷9=0.07 5.4÷1.45≈3.72 0×4.65=0 1÷0.25=4 2.7÷0.9=3
20.【解答】解: 8.4÷4=2.1 1.1×0.8=0.88
3.6÷0.2=18 0.56+4.44=5
0.72÷90=0.008 1.25×5×8=50
4×0.5=2 0.36÷0.12=3
0.1÷0.05=2
3.5÷0.7=5 3.3÷0.1=33
0.14÷2=0.07 9.6÷6=1.6
2.9+3.7+2.1=8.7 7.6×8+2.4×8=80 0.4×0.25=0.1
21.【解答】解:
4.8÷0.8=6 7.5﹣0.45=7.05 5.7+3.3=9 1÷0.25=4 6.2÷0.62﹣1=9
0.75÷1.5=0.5 0.2÷4=0.05
22.【解答】解:
0.21×4=0.84 1.2×60=72 5+3.2÷0.8=9
0.72÷0.9=0.8 23.7+2.63=26.33 4.8÷0.4=12 0.5÷2=0.25 6.5﹣5.6=0.9 1÷0.25=4 0.4×0.8=0.32 0.48÷0.8=0.6
23.【解答】解: 1.2÷0.4=3 2÷8=0.25 0÷5.32=0 3.6+1.8=5.4
4÷0.5=8
0.72÷4=0.18
8÷0.8=10
10÷4=2.5
0.35×4=1.4 0.3÷0.15=2
1﹣0.73=0.27 0.24÷0.6=0.4
13.2÷0.6=22
6.4÷1.6=4 0.125×80=10 0.5×0.8=0.4
24.【解答】解:
2.5÷0.5=5 0.42÷0.6=0.7 3.5÷0.01=350 0.54÷0.6=0.9 0.8﹣0.35=0.45 0.25×4=1 12.5×0.8=10 0.2×50=10
25.【解答】解:
0.56÷0.7=0.8 0.6+0.65=1.25 3.9÷1.3=3
12÷0.03=400
0÷3.68=0
0.3×0.2=0.06
5.2÷0.13=40 99×1.01=99.99 13.5﹣2.8﹣7.2=3.5 25×0.32×125=1000
26.【解答】解: 3.6÷1.2=3
8.1÷9=0.9
4.8÷0.6=8
1.25×8=10
99÷0.9=110 25÷0.05=500 88÷0.008=11000 1÷2.5=0.4
27.【解答】解:
0.64÷0.32=2 0.7×1.2=0.84 7.2÷(0.8×9)=1 40×0.25=10 0÷4.8=0 2.9÷2.9=1 0.3×0.6=0.18 0.07×50=3.5
100×0.07=7 22.1×1=22.1
28.【解答】解:0.02×0.1=0.002 12﹣4.3=7.7 36÷0.01=3600 0.8×0.125=0.1 2.3+0.8=3.1 0.36÷0.4÷9=0.1
29.【解答】解:3.6÷1.2=3 4.4÷4=1.1 4.8÷0.4=12 1÷0.25=4
30.【解答】解: 6.4÷8=0.8
9.8÷0.14=70 4.8÷16=0.3
8.7÷29=0.3 0.99÷9.9=0.1 5.5÷0.11=50
31.【解答】解:
0.63÷9=0.07
13.8÷6.9=2 0.56÷8=0.07 1.2×0.1=0.12
0.07×10=0.7 3﹣1.9=1.1 51÷0.3=170 4.3+15.37=19.67
2.9×10.02≈30 12.1÷3.9≈3 6÷0.58≈10
32.【解答】解: 3.6÷3=1.2 4.8÷4=1.2
7.8÷6=1.3 3.9÷13=0.3
9.9÷9=1.1 3.6÷12=0.3
56.7÷7=8.1 8.1÷27=0.3
0.04÷2=0.02 0.88÷4=0.22 1.25÷5=0.25 7.5÷0.05=150
33.【解答】解: 1÷0.25=4
0.78÷6=0.13 2.4÷24=0.1
34÷0.2=170 70×0.12=8.4
6.6÷0.6=11 5÷0.5=10 0.8×7=5.6
34.【解答】解: 2.1÷2=1.05
8×0.6=4.8
3.8+1.02=4.82 7.5×0.4=3 2x﹣0.7x=1.3x 10÷8=1.25
4.5+0.76=5.26
0.8×0.6=0.48 3.2×0.5=1.6
35.【解答】解: 22.4÷4=5.6 0.25×4=1 42÷3=14
36.【解答】解:
9.6÷0.06=160 3.57÷0.7=5.1
0.21÷7=0.03 5.6÷7=0.8 1.2×5=6
6.12÷0.6=10.2 0.54÷6=0.09 38.5÷5=7.7 24÷0.8=30