问题
解答题
口算:
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答案
40×20=800, | 23×30=690, | 12×30=360, | 98÷2=49, | 8×200=1600, |
42×20=840, | 32×2=64, | 72÷6=12, | 46÷5=9…1, | 360÷9=40, |
180÷9=20, | 500×6=3000, | 54÷2=27, | 11×30=330, | 60×20=1200, |
22×30=660, | 50×10=500, | 0×51=0, | 259+51=310, | 64÷2=32. |