56 - 7 X 8 =, 81 - 9 X 9 =, 49 - 7 X 7 =, 36 - 6 X 6 =, 1 - 1 X 1 =, 25 - 5 X 5 =, 15 - metade de 30, 16 - 4 X 4 =, 100 - 10 X 10 =, 64 - 8 X 8 =, 9 - 3 X 3 =, 121 - 11 X 11 =, 144 - 12 X 12 =, 169 - 13 X 13 =, 8 - 24 : 3 =, 18 - metade de 36, 24 - dobro de 12, 5 - 20 : 4 =, 21 - triplo de 7, 26 - metade de 52, 4 - 16 : 4 = , 3 - 18 : 6 =, 19 - metade de 38, 6 - 18 : 3 =, 2 - 14 : 7 =,
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CÁLCULO MENTAL 1
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Estevamsantos
Fundamental II
6º ano
7º ano
Mat.
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