《2025年速算天地数学口算心算五年级上册苏教版》

🐉5×0.5=2.5
0.5×0.5=0.25
0.5×0.05=0.025
1.6×4=6.4
1.6×0.4=0.64
6×0.5=3
0.6×0.5=0.3
0.06×0.5=0.03
0.8×9=7.2
0.8×0.9=0.72
0.8×0.09=0.072
2×3.1=6.2
0.2×3.1=0.62
0.02×3.1=0.062
2.3×4=9.2
2.3×0.4=0.92
2.3×0.04=0.092
5×1.6=8
0.5×1.6=0.8
0.05×1.6=0.08
🐉2.1×3=6.3
2.1×0.3=0.63
0.5×8=4
0.5×0.8=0.4
0.7×4=2.8
0.7×0.4=0.28
9×0.6=5.4
0.9×0.6=0.54
1.2×3=3.6
0.12×3=0.36
0.12×0.3=0.036
4.2×2=8.4
0.42×2=0.84
0.42×0.2=0.084
2.2×4=8.8
0.22×4=0.88
0.22×0.4=0.088
3.2×3=9.6
0.32×3=0.96
0.32×0.3=0.096

答案： 5×0.5=2.5
0.5×0.5=0.25
0.5×0.05=0.025
1.6×4=6.4
1.6×0.4=0.64
6×0.5=3
0.6×0.5=0.3
0.06×0.5=0.03
0.8×9=7.2
0.8×0.9=0.72
0.8×0.09=0.072
2×3.1=6.2
0.2×3.1=0.62
0.02×3.1=0.062
2.3×4=9.2
2.3×0.4=0.92
2.3×0.04=0.092
5×1.6=8
0.5×1.6=0.8
0.05×1.6=0.08
2.1×3=6.3
2.1×0.3=0.63
0.5×8=4
0.5×0.8=0.4
0.7×4=2.8
0.7×0.4=0.28
9×0.6=5.4
0.9×0.6=0.54
1.2×3=3.6
0.12×3=0.36
0.12×0.3=0.036
4.2×2=8.4
0.42×2=0.84
0.42×0.2=0.084
2.2×4=8.8
0.22×4=0.88
0.22×0.4=0.088
3.2×3=9.6
0.32×3=0.96
0.32×0.3=0.096