It is possible to do many simple tricks with numbers. Here is one trick. It has

It is possible to do many simple tricks withnumbers. Here is one trick. It has several separate steps.

  First,write down your house number. For example, if your address is 73 Lemon Street,you would write down 73. After you write down your house address, next doubleit, then add five to this double number. For example, if your address was 73and you doubled it, you would get146. Then, if you added five, you’d get 151.

  Thenmultiply this number by 50. In our example here, you’ll get 7550. The next stepis to add your age to this total. For example, if you’re26 years old, youshould add 26 to this total. In our example here, the result would be 7576.

  Afterthat you have to add the number of days in a year, which is 365. In our examplehere, 365 added to 7576 is 7941.

  Thefinal step is this: Subtract 615 from the number that you have. Take away 615from the total. In our example, 7941 minus 615 is 7326.

  Theresult here —7326— is the trick. The first part of the number is the addressand the last part of the number is the age of the person. That is, 73 is theaddress that we started with, and 26 is the age that we used.

1．The best title of the passageis________

A．The number tricks

B．A trick with numbers

C．An interesting problem

D．How to work out a difficult trick

2. Howmany steps are there in the trick?

A．5

B．6

C．7

D．8

3. Whichof the following step is wrong?

A．Multiply this number by 2.

B．Add 5 to this number.

C．Plus 50 to this number.

D．Take 615 away from this total.

4. We mayinfer from the result________

A．how many days there are in a year

B．how old the person is

C．how clever the person is

D．where the person lives

5. Thethird step is________

A．+5

B．×2

C．–365

D．+615

试题答案

答案：BCCBA