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56÷7＋36÷6 500×(400－396) 72÷9－5

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564+264-453 7650-(546+4530) 65×9-450

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9×80+980 9000-(4500+250) 6700+72÷8

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14×6+9×5 900÷(71-68) 180÷9-42÷6

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12÷6＋45×3 8×(910-720) 760-540+1110

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6500+1250-3500 80×30+5600 9450-3200-4200

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2400÷6－45 800× 7－180 1600÷2＋230

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