Questions

From Worst to Best

36 P6.SP.JC.18011320

Level 3
It takes Faucet X 15 minutes to fill a tank measuring 14 cm by 8 cm by 12 cm completely while it takes Faucet Y only 10 minutes. How long will it take to completely fill the tank with water if both faucets are turned on at the same time and 3 cubic cubes of edges 3 cm, filled with water, are poured into the tank? Leave the answer in minutes and round off to 2 decimal places.

4 m

Attempt

37 P6.PA.JM.18011216

Level 3
Study the patterns.

Find the total number of triangles in Figure 30.
Express the biggest triangle as a percentage of the total possible number of triangles in Figure 30. Correct your answer to 2 decimal places.

5 m

Attempt

Equal intervals D Place values D Round off Finding percent

38 P6.RD.TL.16010189

Level 3
Vincent has some 20-cent coins and 50-cent coins which amount to more than $20 but less than $54. The number of 20-cent coins is ¹₄ of all the coins he has. When he exchanges some 50-cent coins for 20-cent coins, the ratio of the number of 50-cent coins to 20-cent coins he now has become 1 : 6.

What is the largest possible amount of money Vincent has?
What is the total value of 50-cent coins that has been exchanged for 20-cent coins? Express the answer to 2 decimal place.

5 m

Attempt

Fraction of a set D Place values D Round off Ratio to units Money More than or less than Proportional exchange Units table Units & parts & boxes Elimination Substitution

39 P6.AP.TL.17090826

Level 3
The figure is made up of a big semicircle of diameter 8 cm and 2 small semicircles with diameter 5.7 cm. Find the shaded area. Round off the answer to nearest 1 decimal place. (Take π = 3.14)

4 m

Attempt

Triangle Semicircle Composite figure area D Place values D Round off

40 P6.AP.TL.17090827

Level 3
Willi noticed the patterns on the square tiles and tried to calculate the area of the shaded part. Leave the answer in 2 decimal places. (Take π = 3.14)