The supplied key prints correct-answer weights of 4 and 6 points. Wrong-answer and blank-answer scoring are not stated; no penalties or blank credit are inferred.
Along the edge of Hoang’s yard, his father placed 6 flower pots for decoration, with each pair of adjacent pots 3 meters apart. There are flower pots at both ends of the yard’s edge. How long is that edge?
Today is Wednesday. Two days ago was Nam’s birthday. Nam’s older sister’s birthday is 5 days after his. On which day of the week is Nam’s sister’s birthday?
In the morning, Hung goes from his house to school. In the afternoon, after school, he goes from school to the bakery to buy some food. How long is the total distance that Hung has traveled (in meters)?
On the shelf, there are two rows for tomatoes. The top row has 12 tomatoes, and the bottom row has 16 tomatoes. How many tomatoes should be moved from the bottom row to the top row so that both rows have the same number of tomatoes?
Hoang, Yen, and Lan are packing items for a field trip. Each of them wears a hat and a scarf of different colors, but there are only three colors: blue, white, and red. Hoang does not wear a white hat but wears a red scarf; Lan does not wear a white scarf; Yen wears a red hat. What color hat and scarf does Lan wear?
Three rabbits weigh 3 kg, 4 kg, and 5 kg respectively. The White Rabbit is lighter than the Brown Rabbit but heavier than the Black Rabbit. How much does the Black Rabbit weigh (in kilograms)?
An has 150,000 VND saved in his piggy bank from New Year lucky money. During the 10-day Tet holiday, An’s mother offers a reward: for each day he helps her with housework, he receives an extra 5,000 VND. An spent 3 days visiting his grandparents and could not help his mother, but on the other days he earned the reward. How much money does An have in his piggy bank after the holiday? Give the amount in VND.
Nam has one 50-thousand-VND bill and one 20-thousand-VND bill. He buys a comic book costing 60 thousand VND. How much change should the shopkeeper give Nam? Give the amount in VND.
During a science experience session, Minh practices hybridizing plants. He crosses a plant with thin red petals with a plant with thick yellow petals. If these traits are either repeated or combined in different ways in the offspring, how many possible types of hybrid plants can be created?
In Ha’s pencil case, there are 3 red pencils, 4 blue pencils, and 2 purple pencils. Without looking into the case, how many pencils does Ha need to take out to be sure of getting at least one blue pencil?
Nam walks for exercise with his father. Every 10 minutes, they complete one lap around the lake. Today, they walked for exactly 1 hour. How many laps did they complete, assuming their speed was constant throughout?