5 x 10, 2 x 100, 20 x 1000, 7 x 10, 23 x 100, 100 x 100, 10 x 20, 5 x 1000, 40 x 100, 10 x 10, 12 x 100, 20 x 50, 100 x 10, 10 x 30, 1000 x 10, 5 x 20, 10 x 50, 20 x 30, 100 x 10, 50 x 10

grade 4

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Multiply by 10 and 100
Multiply by 10 and 100
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打地鼠
multiply by 10, 100, 1000
multiply by 10, 100, 1000
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迷宫追逐
x 10 x 100
x 10 x 100
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打地鼠
Multiply and Divide by 10, 100 & 1000
Multiply and Divide by 10, 100 & 1000
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翻卡片
Multiply by 10, 100, 1000
Multiply by 10, 100, 1000
由
翻卡片
Multiply and divide by 10, 100 and 1000
Multiply and divide by 10, 100 and 1000
由
配对游戏
Multiply and Divide by 10, 100 & 1000
Multiply and Divide by 10, 100 & 1000
由
翻卡片
Multiplying and dividing by 10, 100, 1000
Multiplying and dividing by 10, 100, 1000
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真假游戏

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