Question
Mr Glen had 600 g of flour at first. On Tuesday, he used 120 g of flour. On Wednesday, he bought some flour and had 530 g in the end. How much did he buy on Wednesday?
4 m

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Mr Glen had 600 g of flour at first. On Tuesday, he used 120 g of flour. On Wednesday, he bought some flour and had 530 g in the end. How much did he buy on Wednesday?