问题
解答题
口算
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答案
13×40=520, | 560÷40=14, | 3÷100=0.03, | 0.28×100÷10=2.8, |
3-1.4=1.6, | 3.7+1.13=4.83, | 120×6=720, | 125×7×8=7000, |
45×20=900, | 2.5+0.9=3.4, | 0÷78=0, | 10-2.3-2.7=5, |
84÷4=21, | 101×28=2828, | 1000×0.013=13, | 25×12+25×28=1000, |