ITMC - Lớp 4 (Đề 2)

There are 50 squares of numbers written on the floor. Start from box number 1 to box number 50 in order from left to right as shown in the figure.

Use it to play a game with the following rule: 

The student who stands on a box, plays this game one time is that the student jumps to the rightfor 3 squares and then jumps to the left for 1 square to stand on the box.

 For example, if a student who stands on box number 1 plays this game one time, so jump to theright for 3 squares to stand on box number 4, and then jump to the left for 1 square stand on box number 3.

If a student stands on box number 8, he plays this game 9 times.

What is the last box number that he stands on?

• 30

• 29

• 28

• 26

• 24

Find the value of (12 * 3)

• 
• 
• 3

• 
• 

Num, Nim and Nuan are 3 runners.

Num runs 140 meters more than Nim.

Nim runs 430 meters more than Nuan.

The total of distance, that run by all of them is 2 kilometers 20 meters.

How many meters of the distance that Num run?

• 906

• 910

• 916

• 922

• 926

  There are some of the candies in a bag. A boy eats candies in a bag in each day as follows:

On the first day, he eats a half of candies in a bag.

On the second day, he eats a half of the remaining candies in a bag.

On the third day, he eats a half of the remaining candies in a bag.

At the end of the third day, there are only 3 candies left in a bag.

How many of candies are there in a bag in total?

• 20

• 18

• 22

• 26

• 24

Mr. M runs around the rectangular park for 4 laps with total distance of 5 kilometers.

If the park has a difference between side length of the width and the breadth is 75 meters, then find the length of the width.

• 1250

• 550

• 350

• 275

• 250

Given that three sides length of a right-angle triangle are 7.5 cm, 10 cm, 12.5 cm.

Find the area of the triangle, in cm².

• 75

• 62.5

• 45

• 42.5

• 37.5

Let ABCD be a square.

The points E, F and G area the midpoint of AB, CD and AD, respectively.

If the area of ABCD is196 square centimeters, find the sum of the area of AEG and the area of DFG, in cm².

• 36

• 49

• 64

• 66

• 72

Consider the largest two-digit number n that satisfies all of the following conditions.

(1)    when n is divided by 7, the remainder is 1.

and (2) when n isdivided by 6, the remainder is 2.

Find the sum of all digits of n.

• 8

• 17

• 11

• 10

• 5

Natcha is an egg merchant. Today she has 2565 eggs. She takes all the eggs into k baskets for sale. Each basket will contain 24 eggs, except for the last basket that must be contained r eggs where r < 24.

Find the value of k + r .

• 125

• 126

• 127

• 128

• 129

Let F (m) be a unit digit of product 4 x 4 x  x 4 (there are m of 4’s)

and G(n) unit digit of product 9 x 9 x  x 9 (there are n of 9’s)

where m and n are positive integers.

For example, F (3) is a unit digit of 4 x 4 x 4 ,

and G(3) is a unit digit of 9 x 9 x 9 .

Since 4 x 4 x 4 = 64 and 9 x 9 x 9 = 729 ,

so we have F (3) = 4 and G(3) = 9

Which one of the following cannot be F (m) + G(n) ?

• 10

• 7

• 5

• 13

• 15