Class name score

First, calculation. (24 points)

1, a number written directly. (12)

30×400= 30×23= 20×500= 360÷60=

630÷70= 27﹢45= 42×20 = 80×800=

9× 1 10 = 320-40= 720÷36= 180÷20=

2. Column vertical calculation. (12)

38×227= 34×407= 280× 14=

Fill in the blanks. (20 points)

1. There are two different puppets and three different hats. Choose a puppet with a hat, there are () ways to match. There are four different puppets and six different hats. Choose a puppet with a hat, there are () matching methods.

2. As shown on the right, A, B and C represent three cities, with () routes from A to B, () routes from B to C, and () routes from B to C..

There are () routes from city A to city C.

3. There are three different numbers: ??????????.

4. Four students shake hands once every two people and () times every * * *. Children's Day is coming, send greeting cards to each other, and a * * * will send () one.

5.8, 5 and 7 can form () different three-digit numbers and () different two-digit numbers.

Third, the judge. (Mark "√" correctly and "×" incorrectly) (12 points)

1, Jiajia has three different shirts, four different skirts and seven different ways to wear them. ( )

2. Multiply three digits by one digit, and the product may be four digits or five digits. …………( )

3.3, 0, 1 can form six different three-digit numbers. ………………( )

4900 ml =9 liters of ............................................. ()

5, 5 people every two people on the phone, a * * * by phone 10 times. ……………………( )

6. Any three sticks can form a triangle. ………………………………( )

Fourth, choose. (Fill in the serial number of the correct answer in brackets) (10)

1, Jingjing, Xiao Fang and Xiaoli took photos with Xiao Fang standing in the middle, with () different arrangements. ( )

a、3 B、6 C、2

2. When calculating 210 ~100 ~ (14 ~ 6), calculate () first.

A, addition b, division c, subtraction

There are five different story books, three different comic books and two history books on the shelf. Xiaoding wants to get a story book and a comic book from them. What are the () different ways to take it?

a、8 B、 10 C、 15

4, equilateral triangle is () triangle.

A, right angle b, acute angle c, obtuse angle

5. When two children play the game of "paper and scissors", * * * has () different results.

a、6 B、9 C、3

Fifth, solve the problem. (34 points)

1, how many different three digits can be formed with 1, 3, 5 and 3 digits? Can you write it all out? What is the sum of the maximum number and the minimum number?

There are 6 stations on the railway line. How many different tickets should be designed?

3. There are 3 shirts, 2 skirts and 2 pairs of trousers, which are matched into a set.

Clothes, how many different ways?

There are 5 male players and 4 female players in the school table tennis team.

(1) The men's team held a competition. Every two people have to play a game. How many rounds does a * * * have to play?

(2) How many different ways are there to choose 1 male players and 1 female players to participate in the mixed doubles competition?

Several fencers won the team championship through everyone's efforts. The coach high-fived them one by one and played them seven times. How many people are there in this team even with the coach?

There are 6 different hats, 4 different scarves and 5 different pairs of gloves in the shop. Obviously, you must choose a hat, a scarf and a pair of gloves How many different collocation methods are there?