口算。(1)4+4+4=(2)6+6+6+6=3×4=6×4=(3)5×6=(4)7×2=6×5=2×7=(5)1..[100%]

口算。(1)4+4+4=(2)6+6+6+6=3×4=6×4=(3)5×6=(4)7×2=6×5=2×7=(5)12÷6=(6)18÷9=12÷2=18÷2=(7)3×7=(8)5×9=21÷7=45÷5=

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直接写出得数。5×3=4×3=2×5=6×6=18÷6=15÷5=25÷5=21÷7=4×4=8×4=4×..[99%]

直接写出得数。5×3=4×3=2×5=6×6=18÷6=15÷5=25÷5=21÷7=4×4=8×4=4×7=5×4=24÷4=36÷6=18÷3=45-9=2×6=20÷5=16÷4=20÷4=

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3,456,9,8,1,2A.2,3,654,1,8,9B.8,3,56,2,1,4,9C.9...[99%]

3,456,9,8,1,2A.2,3,654,1,8,9B.8,3,56,2,1,4,9C.9,2,56,3,4,8,1D.4,1,2,6,8,5,9,3

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3,456,9,8,1,2A.2,3,654,1,8,9B.8,3,56,2,1,4,9C.9...[99%]

3,456,9,8,1,2A.2,3,654,1,8,9B.8,3,56,2,1,4,9C.9,2,56,3,4,8,1D.4,1,2,6,8,5,9,3

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3,456,9,8,1,2A.2,3,654,1,8,9B.8,3,56,2,1,4,9C.9...[99%]

3,456,9,8,1,2A.2,3,654,1,8,9B.8,3,56,2,1,4,9C.9,2,56,3,4,8,1D.4,1,2,6,8,5,9,3

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3,456,9,8,1,2A.2,3,654,1,8,9B.8,3,56,2,1,4,9C.9...[99%]

3,456,9,8,1,2A.2,3,654,1,8,9B.8,3,56,2,1,4,9C.9,2,56,3,4,8,1D.4,1,2,6,8,5,9,3

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3,456,9,8,1,2A.2,3,654,1,8,9B.8,3,56,2,1,4,9C.9...[99%]

3,456,9,8,1,2A.2,3,654,1,8,9B.8,3,56,2,1,4,9C.9,2,56,3,4,8,1D.4,1,2,6,8,5,9,3

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3,456,9,8,1,2A.2,3,654,1,8,9B.8,3,56,2,1,4,9C.9...[99%]

3,456,9,8,1,2A.2,3,654,1,8,9B.8,3,56,2,1,4,9C.9,2,56,3,4,8,1D.4,1,2,6,8,5,9,3

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3,456,9,8,1,2A.2,3,654,1,8,9B.8,3,56,2,1,4,9C.9...[99%]

3,456,9,8,1,2A.2,3,654,1,8,9B.8,3,56,2,1,4,9C.9,2,56,3,4,8,1D.4,1,2,6,8,5,9,3

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3,456,9,8,1,2A.2,3,654,1,8,9B.8,3,56,2,1,4,9C.9...[99%]

3,456,9,8,1,2A.2,3,654,1,8,9B.8,3,56,2,1,4,9C.9,2,56,3,4,8,1D.4,1,2,6,8,5,9,3

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