On Monday, Trang sold 70 watermelons. On the same day, Chi sold double the number of watermelons that Trang sold. How many watermelons did Chi sell on that day?

• 70

• 140

• 35

• 105

On Tuesday, Minh sold 70 watermelons. On the same day, Tai sold half of the number of watermelons that Minh sold. How many watermelons did Tai sell on that day?

• 70

• 140

• 35

• 105

On Monday, Trang sold 16 watermelons. On the same day, Chi sold double the number of watermelons that Trang sold, and Son sold half of the number of watermelons that Trang and Chi sold. How many watermelons did Son sell on that day?

• 12

• 24

• 32

• 48

What is the 10^th object?

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What is the 89^th object?

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What is the 2512^th object?

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Dad bought 1 kg 200 g of candied coconut. His family used 400 g on the first day of Tet Holiday. What was the weight of the remaining candied coconut?

• 1 kg 600 g

• 400 g

• 800 g

• 1 kg

Mom bought 1 kg 500 g of watermelon seeds. She used 350 g on the first day of Tet Holiday. She used 80 g fewer watermelon seeds on the second day than the first day. What was the weight of the remaining watermelon seeds?

• 620 g

• 1 kg 70 g

• 880 g

• 1 kg 150 g