Problem Solving Contest

Zain buys a bracelet for BD 32.560. She give BD 50 to the cashier.

How much is her changed?

• BD 17.044

• BD 17.400

• BD 17.440

• BD 17.404

I'am a 3D shape.

I have 6 vertices, 6 faces and 10 edges.

Who am I?

• a. triangular prism

• b. triangular pyramid

• c. square based pyramid

• d. pentagonal pyramid

Mr. Hassan drives around Bahrain to see different historical places with his friends. He used 23/4 liters of petrol. How much liters of petrol he used in mixed number?

• a. 5 4/3 litres

• b. 5 3/4 litres

• c. 3 4/5 litres

• d. 4 3/5 litres

Zainab get his scored in three subjects.

She got 19 out of 20 in English, 11 out of 15 is Science and 8 out of 10 in Math.

She put her subject in ascending order.

What must be the arrangement?

• a. Math, Science and English

• b. English, Math and Science

• c. Science, Math and English

• d. English, Science and Math

Andy weights different object brought by the class.

45g 36g 35g 36g 36g 24g 12g 38g 40g 41g

what is the most common weight?

• a. 25g

• b. 36g

• c. 40g

• d. 29g

Hussain made several numbers.

Which divisibility rule can be used for these numbers?

57,432 37,620 99,324

• a. 2, 4 and 5

• b. 3, 5, and 6

• c. 2, 3 and 9

• d. 3, 6, and 8

Jane pours 25.8 liters of water to 10 pale.

How many litres of water were there altogether?

• a. 2.58

• b. 0.258

• c. 258

• d. 2 580

Mahdi answered his homework.

71.9 x 6 =

71 x 6 = 426 and 0.9 x 6 = 54

The answer will 480. Is he correct?

Choose the correct explanation.

• a. He is correct he multiplied it correct.

• b. He is wrong he must multiply 0.9 x 6 = 5.4

• c. He is correct he is smart

• d. He is wrong, he must add 426 + 0.54 the answer is 426.57

Here are four cards.

Sami create a three digit number that is a multiple of 8.

• a. 651

• b. 851

• c. 856

• d. 158

Hadi list down the distance made by

10m, 4m, 6m, 7m, 5m, 8m, 9m

• a. 6m

• b. 5m

• c. 7m

• d. 8m