ITMC - Lớp 4 ( Đề 10)

Find the value of 2222 x 4445 - 1111 x 8889 .

• 1101

• 1110

• 1111

• 1211

• 1132

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?

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 greater than 6 but less than 7

• The value of N is 2.23 less than 10

There are 18 men and 22 women in a bus.

At the first bus stop, 4 women get off and 6 men (new passengers) get on the bus.

When the bus moves away the first bus stop, what fraction of the total passengers is the number of male passengers?

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Given a pattern of positive numbers as follows 1, 2, 4, 6, 7, 18, 27, 54, T, M, C. If T, M, C are the next three numbers.

What is the remainder when T + M + C is divided by 7?

Each of I, T, M, C is in a square. All squares are equal size.

The squares are arranged as an octagon with perimeter 150 centimeters as shown in the figure. Find the area of a square?

• 361

• 324

• 256

• 248

• 225

In the adjoining figure, ABGF is a square and its area is equal to the square FGDE.

The area of ABGF is 289 square of centimeters CD = 3DE.

What is the area of the triangle BCD in square of centimeters?

• 912

• 924

• 867

• 834

• 895

Let ITMC be a 4-digit positive integer with nonzero digits where T is two times I and M is two times C. How many ITMC are there?

The octagons in figure1 and figure2 consist of 7 and 8 identical squares respectively. Suppose that the perimeter of the octagon in figure1 is 42.

What is the perimeter of the octagon in figure2?

There is a track with a rectangular shape of 4 x 5 in which the dog can only walk along the boundary line as shown. Each small rectangle has sides 12 meters long and 5 meters wide. The trainer places a piece of snack at the intersection of the edges on the grid. Then let Fermat to start at point A. (no a piece of snack at A)

When the timer starts, Fermat walk along the edges of this grid, and every time she arrives at a piece of snack she spend 1 minute to eat it and then walking to find the next one.

Assume that the speed of walking along the edge of Fermat is a constant at 20 meters per minute.

What is the shortest possible time that Fermat takes to eat all snacks in the grid?