摘要：19．计算
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计算题
1. What percentage of area is shaded?
Answer: _ .
2. If a group of 6 people have an average age of 21, and each person is half the age of the next person,
what are the ages of the 6 people?
Answer: _ .
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1. What percentage of area is shaded?
Answer: _ .
2. If a group of 6 people have an average age of 21, and each person is half the age of the next person,
what are the ages of the 6 people?
Answer: _ .
计算题
1.
Answer:
2. Bill is eighteen years old, and his age is three times that of Mary.
When Billis twice as old as Mary, how old is he then?
Answer:
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1.
Answer:
2. Bill is eighteen years old, and his age is three times that of Mary.
When Billis twice as old as Mary, how old is he then?
Answer:
计算题。
1. Kate has a quzuler more books than Peter and Peter has a third more books than Jill.
Altogether they have 120. How many books does each person have?
Answer: __________________________________________________________
2. What weight must be placed at "?" to balance the Scale?
Answer:____________________________________________________________
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Altogether they have 120. How many books does each person have?
Answer: __________________________________________________________
2. What weight must be placed at "?" to balance the Scale?
Answer:____________________________________________________________
计算题
Solve the puzzle to find out how many ping-pong balls are flying about here. The top ball is your answer. Answer: ____
2. What is twice a half of five and a half?
A. Ten and a half.
B. Five and a half.
C. Ten.
D. Two and a half.
Answer: _____
计算题.
1.At 12 noon my watch was correct. However, it then started to lose 18 minutes per hour.
Four hours ago it stopped completely and is now showing the time as 15:30.
What is the correct time now?
Answer: _____________________________________________________________
2.
What value of weight should be placed on the scales to balance?
Answer: _____________________________________________________________
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Four hours ago it stopped completely and is now showing the time as 15:30.
What is the correct time now?
Answer: _____________________________________________________________
2.
What value of weight should be placed on the scales to balance?
Answer: _____________________________________________________________