①6×7+7 =
②6×9+7 =
③8×9-24 =
④8×3+8 =
⑤9×5-25 =
⑥5×8+27 =
①27+38+12
②83-46-24
③43+(56-24)
④85-(43-28)
①36×()
②1.3×37.5%+2.7×
③ [()]
④13÷()×