Toán Lớp 2: a. 45 – 24…..17 + 10
24 + 35…..56 – 36
6 + 4…….7 + 2
b. 32 + 16……20 + 28
37 – 17……56 – 36
10 – 2……..10 – 1 làm hộ
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Toán Lớp 2: a. 45 – 24…..17 + 10
24 + 35…..56 – 36
6 + 4…….7 + 2
b. 32 + 16……20 + 28
37 – 17……56 – 36
10 – 2……..10 – 1 làm hộ
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