ITMC - Lớp 4 (Đề 6)

In the adjoining figure, if the numbers 1, 2, 3, and 4 have to be filled in the blan cells of the table (1 cell 1 number).

Find the number of ways this can be done if in each rowan deach column consists of different numbers.

• 1

• 2

• 3

• 4

• more than 4

Find the value of 2222 x 4445 - 1111 x 8889

The rectangle ABCD has area 2562 square centimeters and perimeter 900 centimeters. Suppose that each side of ABCD is decreased by 1 centimeter.

What is the area of the new rectangle?

The moving speed of 5 robots are recorded as follows:

robot 1 : moves 100 meters in 13 seconds,

robot 2 : moves 200 meters in 27 seconds,

robot 3 : moves 400 meters in 53 seconds,

robot 4 : moves 600 meters in 1 minute and 20 seconds, and

robot 5 : moves 800 meters in 1 minute and 50 seconds.

Which robot has the moving speed fastest?

• robot 1

• robot 4

• robot 3

• robot 5

• robot 2

Malee and her friend have an appointment at 11.00. The appointed place is 40 kilometers far fromMalee’s home. Malee travelled with average speed 50 kilometers per hour from her home to the appointed place. She reached the appointed place 15 minutes late.

At what time did Malee leave her home?

• 10.37

• 10.27

• 10.17

• 10.07

• 9.57

  Find the value of 0.013 x 0.197

• 2.561

• 0.2561

• 0.02561

• 0.002561

• 0.0002561

A bag shop sells a bag priced at 199 baht.Each day from Monday to Friday the shop sold a number of bags as follows.

Monday:  15 bags were sold.

Tuesday: the number of bags were sold 3 bags greater than Monday.

Wednesday: thenumber of bags were sold 4 bags less than Tuesday.

Thursday: the number of bags were sold equal to Tuesday.

The shop receives money 15,323 baht in total from selling bags 5 days (Monday to Friday).

How many bags were sold on Friday?

(Note that baht is the currency of Thailand.)

Let T, M, and C represent different digits from 0 to 9.

Given the pattern of numbers as follows 2019, 2044, 2072, 2103, TMC7 . Determine the value of T + M + C.

• 4

• 5

• 6

• 7

• 8

Given that N = 7 + 0.7 + 0.07 + 0.007. Which one of thefollowing statements is true?

• The value of N is 2.777 greater than 5.

• The value of N is 7.077.

• The value of N is 0.777.

• The value of N is 2.23 less than 10.

• The value of N is greater than 6 but less than 7.

In the adjoining figure, the letter T M C are constructed by squares with length

of a side 2 units.

What is the area of the constructed letters in total?