1.62×9=20.
1×3.73=
2021/1/18 10:50
口算
21.3×0.15=22.3.11×8=23.3.09×3=24.0.42×4=25.0.88×7=26.2×2.07=27.3.12×4=28.2×4.95=29.9×0.17=30.2.33×5=31.3.63×6=32.8×3=33.2.31×5=34.2×1.71=35.2×1.5=36.4.43×7=37.1.86×2=38.3.66×9=39.4.69×8=40.
2.27×2=
完成时间:
41.7×4.99=42.8×0.37=43.0.94×5=44.4.07×6=45.0.32×9=46.0.75×2=47.5×0.61=48.0.81×2=49.7×2.33=50.4×1.73=51.7×1.07=52.6×2.85=53.1.39×5=54.1.6×6=55.2.62×4=56.2×4.81=57.1.37×9=58.9×4.87=59.1.8×7=60.
9×2.03=
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