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BÀI TẬP: ĐO ĐỘ DÀI
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20 dm + 40 dm = ... dm
60 dm
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Okay!
80 dm - 50 dm = ... dm
30 dm
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Okay!
50 cm = ... dm
5 dm
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Okay!
60 cm =... dm
6 dm
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Okay!
5 dm + 20 dm - 10 dm = ... dm
15 dm
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Okay!
40 cm = ... dm
4 dm
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Okay!
30 cm + 5 cm - 10 cm = ... cm
25 cm
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