"Ready, Set, Hop! (MathStart 3)"

"Frog friends, Matty and Moe, are off with a ""Ready, Set, Hop!"" They both made it to the rock, but who's in the lead? If Matty hopped 5 hops and Moe hopped 2 more hops than Matty, then the score is 5 to 7. But then they're off again. Any child who can add or subt...

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主要作者: Stuart J. Murphy
格式: 图书
语言:Undetermined
出版: HarperCollins 1996
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